12 Days of Christmas
14th6th
99 Bottles of Beer
25th
Abundant Numbers
38th
brainfuck
3rd
Christmas Trees
21st
Cubes
16th
Divisors
22nd50th
Emirp Numbers
9th
Emojify
11th
Evil Numbers
19th35th
Fibonacci
98th17th37th
Fizz Buzz
35th99th
Leap Years
24th
Leyland Numbers
7th
Niven Numbers
31st
Odious Numbers
19th33rd
Pernicious Numbers
43rd
Prime Numbers
32nd40th
Rule 110
11th
Spelling Numbers
6th
Sudoku
3rd
π
48th