12 Days of Christmas
20th
522nd
99 Bottles of Beer
291st
Arrows
131st
Catalan Numbers
112th
Christmas Trees
47th
Collatz
18th
Divisors
52nd
489th
Evil Numbers
135th
Fizz Buzz
150th
688th
Fractions
45th
Prime Numbers
128th
Quine
61st
72nd
Recamán
4th
150th
Rijndael S-box
114th
Tongue-twisters
24th14th
√2
128th