12 Days of Christmas
901st
99 Bottles of Beer
740th
Abundant Numbers
810th
Arrows
161st
Collatz
617th
Emirp Numbers
675th56th
Evil Numbers (Long)
537th
Fizz Buzz
1,695th333rd
Foo Fizz Buzz Bar
586th
Leap Years
266th103rd323rd84th539th
Niven Numbers (Long)
250th
Prime Numbers
797th
Rock-paper-scissors-Spock-lizard
255th
Sierpiński Triangle
406th