12 Days of Christmas
13th99 Bottles of Beer
9thbrainfuck
8thChristmas Trees
10thDiamonds
12thDivisors
19thEmirp Numbers
13thEvil Numbers
30thFibonacci
49thFizz Buzz
55thHappy Numbers
14thMorse Encoder
8thNiven Numbers
26thOdious Numbers
29thPangram Grep
14thPascal’s Triangle
22ndPernicious Numbers
24thPrime Numbers
23rdRule 110
12thSierpiński Triangle
12thπ
55thτ
37th