12 Days of Christmas
10th20th12th5th16th
24 Game
99 Bottles of Beer
11th9th10th6th14th
Abundant Numbers
19th14th10th7th21st
Abundant Numbers (Long)
11th9th4th6th18th
Arabic to Roman
Arithmetic Numbers
Arrows
Ascending Primes
ASCII Table
7th12th13th3rd14th
Billiards
brainfuck
Card Number Validation
Catalan Numbers
19th9th5th5th8th
Catalan’s Constant
8th9th5th6th11th
Christmas Trees
10th11th13th4th12th
Collatz
16th13th15th9th19th
CSS Colors
Cubes
5th9th6th5th10th
Day of Week
DFA Simulator
Diamonds
9th9th13th3rd13th
Divisors
25th11th13th5th22nd
Emirp Numbers
15th10th14th5th12th
Emirp Numbers (Long)
8th8th11th6th11th
Emojify
Evil Numbers
23rd20th13th6th18th19th28th51st117th43rd25th23rd32nd48th37th39th15th28th22nd15th26th17th25th72nd35th78th13th58th17th54th388th17th47th53rd14th43rd28th19th26th13th82nd79th27th237th17th22nd13th
Evil Numbers (Long)
13th13th11th6th17th
Factorial Factorisation
Farey Sequence
Fibonacci
85th31st12th7th52nd47th35th86th279th122nd29th27th37th56th75th73rd63rd65th32nd65th32nd32nd66th188th70th188th9th54th35th61st190th22nd112th51st29th189th82nd33rd21st35th209th167th35th148th55th44th36th15th245th224th
Fizz Buzz
120th33rd27th1st8th43rd11th30th521st54th
Foo Fizz Buzz Bar
11th12th26th3rd19th
Forsyth–Edwards Notation
Fractions
Game of Life
Gijswijt’s Sequence
Happy Numbers
16th11th22nd4th14th
Happy Numbers (Long)
8th10th19th4th16th
Hexdump
Intersection
Inventory Sequence
8th7th18th10th11th
ISBN
Jacobi Symbol
Kaprekar Numbers
Kolakoski Constant
8th8th4th6th11th
Kolakoski Sequence
17th12th12th11th10th
Leap Years
23rd13th3rd5th21st
Levenshtein Distance
Leyland Numbers
7th9th6th5th9th
ln 2
Look and Say
9th11th11th4th11th
Lucky Numbers
7th8th9th5th10th
Lucky Tickets
Mahjong
Maze
Medal Tally
Morse Decoder
Morse Encoder
Musical Chords
N Queens
Niven Numbers
21st16th10th5th22nd23rd26th66th101st38th24th20th28th47th20th34th25th32nd18th24th23rd
Niven Numbers (Long)
9th11th17th4th17th
Number Spiral
5th8th9th6th11th
Odious Numbers
22nd18th13th6th19th
Odious Numbers (Long)
11th13th12th5th17th
Ordinal Numbers
PalindromemordnilaP
Pangram Grep
Pascal’s Triangle
9th8th12th4th15th
Pernicious Numbers
15th17th19th17th21st
Pernicious Numbers (Long)
7th10th15th4th12th
Poker
5th
Polyominoes
Prime Numbers
29th15th16th5th24th
Prime Numbers (Long)
17th11th20th5th20th
Proximity Grid
QR Decoder
Quine
1st
Recamán
12th9th12th8th11th
Repeating Decimals
Reverse Polish Notation
Reversi
Rijndael S-box
Rock-paper-scissors-Spock-lizard
Roman to Arabic
Rule 110
5th8th4th4th11th
Seven Segment
SI Units
Sierpiński Triangle
7th11th12th4th14th
Smith Numbers
10th9th7th5th11th
Spelling Numbers
Star Wars Opening Crawl
Sudoku
Sudoku (Fill-in)
Ten-pin Bowling
Time Distance
Tongue-twisters
10th11th8th7th10th
Transpose Sentence
United States
Vampire Numbers
11th10th7th3rd10th
Van Eck Sequence
8th10th12th10th11th
Zeckendorf Representation
Zodiac Signs
γ
λ
11th10th3rd8th15th
π
13th12th7th9th7th
τ
11th10th5th8th5th
φ
13th9th7th7th4th
√2
20th8th5th9th13th
𝑒
13th11th10th11th6th