12 Days of Christmas
31st
99 Bottles of Beer
12th
Abundant Numbers
23rd
brainfuck
5th
Divisors
21st
Emirp Numbers
36th
Evil Numbers
32nd
Fibonacci
22nd
Fizz Buzz
22nd
Happy Numbers
39th
Leap Years
40th
Niven Numbers
20th
Odious Numbers
31st
Ordinal Numbers
12th
Pangram Grep
4th
Pascal’s Triangle
24th
Pernicious Numbers
38th
Poker
7th
Prime Numbers
23rd
Quine
1st
United States
12th