12 Days of Christmas
24 Game
99 Bottles of Beer
5th
Abundant Numbers
14th15th21st22nd16th11th14th146th81st55th13th14th21st31st16th29th16th22nd17th14th18th
Abundant Numbers (Long)
10th
Arabic to Roman
Arithmetic Numbers
Arrows
Ascending Primes
5th
ASCII Table
6th13th16th14th14th10th20th
Billiards
brainfuck
Card Number Validation
Catalan Numbers
Catalan’s Constant
6th10th
Christmas Trees
Collatz
CSS Colors
Cubes
Day of Week
DFA Simulator
Diamonds
Divisors
Emirp Numbers
9th11th12th13th14th7th16th70th37th25th16th17th28th30th27th25th17th17th9th18th20th
Emirp Numbers (Long)
7th
Emojify
Evil Numbers
17th21st20th24th20th14th25th177th100th50th24th14th31st31st19th38th22nd19th12th21st20th
Evil Numbers (Long)
12th
Factorial Factorisation
4th
Farey Sequence
Fibonacci
69th34th61st95th45th27th24th356th171st129th33rd27th34th56th41st57th40th48th
Fizz Buzz
119th34th54th153rd34th30th95th460th416th217th20th36th23rd52nd70th51st51st55th44th53rd
Foo Fizz Buzz Bar
Forsyth–Edwards Notation
Fractions
Game of Life
Gijswijt’s Sequence
6th
Happy Numbers
9th12th18th16th16th11th19th83rd48th30th16th16th28th24th23rd26th
Happy Numbers (Long)
5th11th15th
Hexdump
Intersection
Inventory Sequence
ISBN
Jacobi Symbol
Kaprekar Numbers
Kolakoski Constant
8th9th
Kolakoski Sequence
Leap Years
20th
Levenshtein Distance
Leyland Numbers
ln 2
9th7th
Look and Say
Lucky Numbers
6th
Lucky Tickets
Mahjong
Maze
Medal Tally
Morse Decoder
Morse Encoder
Musical Chords
N Queens
Niven Numbers
17th17th22nd47th21st19th21st131st77th61st22nd21st27th40th27th33rd21st25th18th23rd18th
Niven Numbers (Long)
Number Spiral
3rd9th14th16th11th9th6th51st29th23rd7th9th12th24th6th9th18th9th6th5th8th8th8th12th17th13th
Odious Numbers
5th19th22nd23rd20th14th24th141st82nd46th23rd15th28th38th19th35th18th19th10th19th19th
Odious Numbers (Long)
Ordinal Numbers
PalindromemordnilaP
Pangram Grep
Pascal’s Triangle
Pernicious Numbers
4th18th22nd23rd20th17th24th87th46th33rd20th13th28th35th16th29th18th21st16th19th20th
Pernicious Numbers (Long)
Poker
Polyominoes
2nd
Prime Numbers
9th16th23rd39th22nd15th20th194th82nd67th22nd22nd28th40th35th30th21st23rd12th26th24th
Prime Numbers (Long)
Proximity Grid
QR Decoder
Quine
1st
Recamán
Repeating Decimals
Reverse Polish Notation
Reversi
Rijndael S-box
5th20th
Rock-paper-scissors-Spock-lizard
Roman to Arabic
Rule 110
Seven Segment
SI Units
Sierpiński Triangle
Smith Numbers
7th
Spelling Numbers
Star Wars Opening Crawl
Sudoku
Sudoku (Fill-in)
Ten-pin Bowling
Time Distance
Tongue-twisters
13th12th6th15th11th6th17th30th38th12th
Transpose Sentence
United States
Vampire Numbers
4th11th
Van Eck Sequence
Zeckendorf Representation
Zodiac Signs
γ
4th10th
λ
10th11th
π
12th14th
τ
10th12th
φ
12th10th
√2
19th9th
𝑒
12th12th