12 Days of Christmas
886th
99 Bottles of Beer
18th
Abundant Numbers
18th
Arrows
11th
Collatz
23rd
Evil Numbers (Long)
472nd
Fibonacci
146th
73rd
Fizz Buzz
120th172nd
71st520th1,347th81st
Niven Numbers (Long)
390th
Odious Numbers
87th
764th64th116th
Pangram Grep
17th
28th48th
48th205th31st27th537th61st96th34th28th
Prime Numbers
44th
Quine
127th
777th
π
32nd