12 Days of Christmas
13th11th
99 Bottles of Beer
32nd
Abundant Numbers
50th
brainfuck
9th
Christmas Trees
25th
Cubes
19th
Divisors
24th70th
Emirp Numbers
18th
Emojify
17th
Evil Numbers
26th49th
Fibonacci
126th18th52nd
Fizz Buzz
40th113th
Leap Years
26th
Leyland Numbers
10th
Niven Numbers
48th
Odious Numbers
28th42nd
Pernicious Numbers
60th
Prime Numbers
40th53rd
Rule 110
11th
Spelling Numbers
9th
Sudoku
10th
π
63rd