12 Days of Christmas
16th
99 Bottles of Beer
9th
Abundant Numbers
23rd
brainfuck
Christmas Trees
13th
Cubes
11th
Diamonds
8th
Divisors
21st
Emirp Numbers
38th
Evil Numbers
47th
Fibonacci
22nd111th
Fizz Buzz
11th
Hexdump
4th
Kaprekar Numbers
15th
Lucky Tickets
Morse Decoder
8th
Niven Numbers
34th
Odious Numbers
45th
PalindromemordnilaP
7th
Pangram Grep
15th
Partition Numbers
14th
Pernicious Numbers
45th
Prime Numbers
59th
Recamán
21st
Rijndael S-box
8th
ROT13
17th
Scrambled Sort
9th
United States
20th
π
17th
τ
15th
φ
30th
√2
34th