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12 Days of Christmas

29^th

99 Bottles of Beer

24^th

Abundant Numbers

12^th

Arabic to Roman

Brainfuck

CSS Colors

Christmas Trees

Cubes

Diamonds

Divisors

38^th

Emirp Numbers

16^th

Evil Numbers

33^rd

Fibonacci

58^th

Fizz Buzz

117^th

Happy Numbers

Leap Years

27^th

Leyland Numbers

Lucky Tickets

Morse Decoder

Morse Encoder

Niven Numbers

31^st

Odious Numbers

26^th

Ordinal Numbers

Pangram Grep

Pascal’s Triangle

Pernicious Numbers

14^th

Poker

Prime Numbers

25^th

Quine

Rock-paper-scissors-Spock-lizard

7^th

Roman to Arabic

Rule 110

Seven Segment

Sierpiński Triangle

Spelling Numbers

Sudoku

Ten-pin Bowling

United States

7^th

λ

6^th

π

11^th

τ

10^th

φ

12^th

√2

11^th

𝑒

9^th