12 Days of Christmas
15th
Abundant Numbers
59th
brainfuck
24th
Christmas Trees
22nd
Diamonds
17th
Divisors
67th
Emirp Numbers
35th
Evil Numbers
69th
Fizz Buzz
109th
Leap Years
81st
Odious Numbers
58th
Ordinal Numbers
26th
Pernicious Numbers
39th
Prime Numbers
54th
Quine
12th
Rock-paper-scissors-Spock-lizard
15th
Rule 110
21st
Sierpiński Triangle
23rd