12 Days of Christmas
15th
Abundant Numbers
59th
brainfuck
25th
Christmas Trees
23rd
Diamonds
17th
Divisors
69th
Emirp Numbers
38th
Evil Numbers
72nd
Fizz Buzz
113th
Leap Years
83rd
Odious Numbers
61st
Ordinal Numbers
26th
Pernicious Numbers
41st
Prime Numbers
55th
Quine
13th
Rock-paper-scissors-Spock-lizard
15th
Rule 110
21st
Sierpiński Triangle
23rd