12 Days of Christmas
            
                        
                    
                        
                    1,136th
                        
                    
        
            24 Game
            
                        
                    
                        
                    117th
                        
                    
        
            99 Bottles of Beer
            
                        
                    
                        
                    449th
                        
                    
        
            Abundant Numbers
            
                        
                    2,780th1,596th
                        
                    
        
            Abundant Numbers (Long)
            
                        
                    
                        
                    807th
                        
                    
        
            Arabic to Roman
            
                        
                    1,064th702nd
                        
                    
        
            Arithmetic Numbers
            
                        
                    
                        
                    601st
                        
                    
        
            Arrows
            
                        
                    
                        
                    962nd
                        
                    
        
            Ascending Primes
            
                        
                    
                        
                    694th
                        
                    
        
            ASCII Table
            
                        
                    
                        
                    755th
                        
                    
        
            Billiards
            
                        
                    
                        
                    329th
                        
                    
        
            brainfuck
            
                        
                    
                        
                    568th
                        
                    
        
            Card Number Validation
            
                        
                    
                        
                    628th
                        
                    
        
            Catalan Numbers
            
                        
                    
                        
                    994th
                        
                    
        
            Christmas Trees
            
                        
                    
                        
                    497th
                        
                    
        
            Collatz
            
                        
                    
                        
                    1,918th
                        
                    
        
            Cubes
            
                        
                    
                        
                    163rd
                        
                    
        
            Day of Week
            
                        
                    
                        
                    535th
                        
                    
        
            DFA Simulator
            
                        
                    
                        
                    455th
                        
                    
        
            Diamonds
            
                        
                    
                        
                    753rd
                        
                    
        
            Divisors
            
                        
                    2,197th903rd
                        
                    
        
            Emirp Numbers
            
                        
                    
                        
                    596th
                        
                    
        
            Emojify
            
                        
                    
                        
                    437th
                        
                    
        
            Evil Numbers
            
                        
                    3,060th2,166th
                        
                    
        
            Evil Numbers (Long)
            
                        
                    
                        
                    1,379th
                        
                    
        
            Factorial Factorisation
            
                        
                    
                        
                    964th
                        
                    
        
            Farey Sequence
            
                        
                    
                        
                    800th
                        
                    
        
            Fibonacci
            
                        
                    3,708th4,399th
                        
                    
        
            Fizz Buzz
            
                        
                    6,073rd5,991st
                        
                    
        
            Forsyth–Edwards Notation
            
                        
                    
                        
                    269th
                        
                    
        
            Fractions
            
                        
                    
                        
                    544th
                        
                    
        
            Game of Life
            
                        
                    
                        
                    607th
                        
                    
        
            Gijswijt’s Sequence
            
                        
                    
                        
                    560th
                        
                    
        
            Happy Numbers
            
                        
                    
                        
                    745th
                        
                    
        
            Hexdump
            
                        
                    
                        
                    384th
                        
                    
        
            Hilbert Curve
            
                        
                    
                        
                    357th
                        
                    
        
            Intersection
            
                        
                    781st451st
                        
                    
        
            Inventory Sequence
            
                        
                    
                        
                    978th
                        
                    
        
            ISBN
            
                        
                    
                        
                    1,180th
                        
                    
        
            Kaprekar Numbers
            
                        
                    
                        
                    281st
                        
                    
        
            Kolakoski Sequence
            
                        
                    
                        
                    1,053rd
                        
                    
        
            Leap Years
            
                        
                    1,072nd1,444th
                        
                    
        
            Levenshtein Distance
            
                        
                    
                        
                    523rd
                        
                    
        
            Leyland Numbers
            
                        
                    
                        
                    442nd
                        
                    
        
            ln 2
            
                        
                    
                        
                    1,306th
                        
                    
        
            Look and Say
            
                        
                    
                        
                    595th
                        
                    
        
            Mandelbrot
            
                        
                    
                        
                    619th
                        
                    
        
            Medal Tally
            
                        
                    
                        
                    361st
                        
                    
        
            Minesweeper
            
                        
                    
                        
                    170th
                        
                    
        
            Morse Decoder
            
                        
                    
                        
                    411th
                        
                    
        
            Morse Encoder
            
                        
                    
                        
                    407th
                        
                    
        
            N Queens
            
                        
                    
                        
                    575th
                        
                    
        
            Niven Numbers
            
                        
                    
                        
                    1,215th
                        
                    
        
            Niven Numbers (Long)
            
                        
                    
                        
                    800th
                        
                    
        
            Number Spiral
            
                        
                    
                        
                    923rd
                        
                    
        
            Odious Numbers
            
                        
                    2,492nd1,677th
                        
                    
        
            Odious Numbers (Long)
            
                        
                    
                        
                    1,371st
                        
                    
        
            Ordinal Numbers
            
                        
                    1,097th1,155th
                        
                    
        
            PalindromemordnilaP
            
                        
                    
                        
                    425th
                        
                    
        
            Pangram Grep
            
                        
                    1,873rd368th
                        
                    
        
            Partition Numbers
            
                        
                    
                        
                    704th
                        
                    
        
            Pascal’s Triangle
            
                        
                    
                        
                    1,462nd
                        
                    
        
            Pernicious Numbers
            
                        
                    
                        
                    2,252nd
                        
                    
        
            Poker
            
                        
                    
                        
                    207th
                        
                    
        
            Polyominoes
            
                        
                    
                        
                    288th
                        
                    
        
            Prime Numbers
            4,221st2,219th2,328th
                        
                    
        
            Prime Numbers (Long)
            
                        
                    
                        
                    1,159th
                        
                    
        
            QR Decoder
            
                        
                    
                        
                    407th
                        
                    
        
            Quine
            
                        
                    
                        
                    3,955th
                        
                    
        
            Recamán
            
                        
                    895th1,112th
                        
                    
        
            Repeating Decimals
            
                        
                    318th123rd
                        
                    
        
            Reverse Polish Notation
            
                        
                    
                        
                    518th
                        
                    
        
            Rijndael S-box
            
                        
                    
                        
                    983rd
                        
                    
        
            Rock-paper-scissors-Spock-lizard
            
                        
                    
                        
                    255th
                        
                    
        
            Roman to Arabic
            
                        
                    1,118th975th
                        
                    
        
            ROT13
            
                        
                    
                        
                    755th
                        
                    
        
            Rule 110
            
                        
                    768th482nd
                        
                    
        
            Scrambled Sort
            
                        
                    
                        
                    219th
                        
                    
        
            Set
            
                        
                    
                        
                    366th
                        
                    
        
            Seven Segment
            
                        
                    885th538th
                        
                    
        
            SI Units
            
                        
                    
                        
                    181st
                        
                    
        
            Sierpiński Triangle
            
                        
                    
                        
                    1,202nd
                        
                    
        
            Spelling Numbers
            
                        
                    
                        
                    376th
                        
                    
        
            Sudoku
            
                        
                    
                        
                    420th
                        
                    
        
            Tic-tac-toe
            
                        
                    
                        
                    448th
                        
                    
        
            Time Distance
            
                        
                    
                        
                    316th
                        
                    
        
            Tongue-twisters
            
                        
                    
                        
                    790th
                        
                    
        
            Transpose Sentence
            
                        
                    
                        
                    278th
                        
                    
        
            Trinomial Triangle
            
                        
                    
                        
                    276th
                        
                    
        
            United States
            
                        
                    
                        
                    549th
                        
                    
        
            Vampire Numbers
            
                        
                    
                        
                    443rd
                        
                    
        
            Van Eck Sequence
            
                        
                    
                        
                    506th
                        
                    
        
            Zeckendorf Representation
            
                        
                    
                        
                    614th
                        
                    
        
            γ
            
                        
                    
                        
                    1,139th
                        
                    
        
            λ
            
                        
                    
                        
                    1,633rd
                        
                    
        
            τ
            
                        
                    
                        
                    1,718th
                        
                    
        
            φ
            
                        
                    
                        
                    1,110th
                        
                    
        
            √2
            
                        
                    
                        
                    1,268th