12 Days of Christmas
20th
528th
99 Bottles of Beer
296th
Arrows
136th
Catalan Numbers
115th
Christmas Trees
47th
Collatz
18th
Divisors
52nd
491st
Evil Numbers
138th
Fizz Buzz
152nd
693rd
Fractions
45th
Prime Numbers
130th
Quine
65th
75th
Recamán
4th
154th
Rijndael S-box
118th
Tongue-twisters
24th14th
√2
132nd