12 Days of Christmas
25th
99 Bottles of Beer
10th
Abundant Numbers
12th
brainfuck
4th
Divisors
18th
Emirp Numbers
30th
Evil Numbers
25th
Fibonacci
1st
Fizz Buzz
17th
Happy Numbers
23rd
Leap Years
31st
Niven Numbers
14th
Odious Numbers
23rd
Ordinal Numbers
11th
Pangram Grep
4th
Pascalβs Triangle
19th
Pernicious Numbers
29th
Poker
6th
Prime Numbers
18th
Quine
1st
United States
11th