12 Days of Christmas
16th
Abundant Numbers
68th
brainfuck
29th
Christmas Trees
24th
Diamonds
18th
Divisors
77th
Emirp Numbers
43rd
Evil Numbers
78th
Fizz Buzz
120th
Leap Years
96th
Odious Numbers
64th
Ordinal Numbers
30th
Pernicious Numbers
50th
Prime Numbers
61st
Quine
25th
Rock-paper-scissors-Spock-lizard
17th
Rule 110
23rd
Sierpiński Triangle
24th