12 Days of Christmas
15th
Abundant Numbers
59th
brainfuck
25th
Christmas Trees
23rd
Diamonds
17th
Divisors
69th
Emirp Numbers
38th
Evil Numbers
70th
Fizz Buzz
111th
Leap Years
83rd
Odious Numbers
59th
Ordinal Numbers
26th
Pernicious Numbers
40th
Prime Numbers
54th
Quine
13th
Rock-paper-scissors-Spock-lizard
14th
Rule 110
21st
Sierpiński Triangle
23rd