12 Days of Christmas
20th
99 Bottles of Beer
14th
Abundant Numbers
16th
brainfuck
9th
Christmas Trees
20th
Diamonds
10th
Divisors
3rd
Emirp Numbers
11th
Evil Numbers
31st
Fibonacci
66th
Fizz Buzz
92nd
Leap Years
40th
Niven Numbers
31st
Odious Numbers
30th
Ordinal Numbers
13th
Pangram Grep
27th
Pascalβs Triangle
17th
Pernicious Numbers
28th
Prime Numbers
10th
Quine
8th
United States
9th