12 Days of Christmas
14th
6th
99 Bottles of Beer
22nd
Abundant Numbers
32nd
brainfuck
4th
Christmas Trees
19th
Cubes
16th
Divisors
21st
41st
Emirp Numbers
9th
Emojify
11th
Evil Numbers
18th
31st
Fibonacci
86th
14th
32nd
Fizz Buzz
32nd
86th
Leap Years
23rd
Leyland Numbers
5th
Niven Numbers
28th
Odious Numbers
18th
29th
Pernicious Numbers
39th
Prime Numbers
27th
34th
Rule 110
10th
Spelling Numbers
6th
Sudoku
4th
π
42nd