12 Days of Christmas
41st
brainfuck
15th
Christmas Trees
5th
Divisors
1st
Emirp Numbers
9th
Emojify
Evil Numbers
16th
Fizz Buzz
12th
Happy Numbers
4th
Intersection
14th
Kolakoski Sequence
11th
Leap Years
30th
Leyland Numbers
2nd
Niven Numbers
44th
Ordinal Numbers
19th
Pangram Grep
Pernicious Numbers
30th
Poker
Prime Numbers
1st
Quine
1st
United States
9th
π
9th