12 Days of Christmas
157th
99 Bottles of Beer
220th
Abundant Numbers
310th
Arabic to Roman
224th
Arithmetic Numbers
164th
Ascending Primes
146th
Christmas Trees
640th
Evil Numbers
1st
Evil Numbers (Long)
32nd
Fizz Buzz
1,706th
Leap Years
406th
Look and Say
289th
Poker
64th
Prime Numbers
393rd
Roman to Arabic
281st