12 Days of Christmas
949th
99 Bottles of Beer
18th
Abundant Numbers
18th
Arrows
13th
Collatz
23rd
Evil Numbers (Long)
511th
Fibonacci
151st
77th
Fizz Buzz
121st177th
73rd533rd1,384th82nd
Niven Numbers (Long)
417th
Odious Numbers
90th
795th66th121st
Pangram Grep
18th
32nd54th
50th216th34th29th561st60th97th37th29th
Prime Numbers
46th
Quine
131st
807th
π
34th