12 Days of Christmas
81st468th
99 Bottles of Beer
371st
Christmas Trees
306th
CSS Colors
194th
Diamonds
416th
Emirp Numbers
579th
Evil Numbers
784th
Fibonacci
905th
Fizz Buzz
666th
Happy Numbers
533rd
Happy Numbers (Long)
280th
Leap Years
443rd
Leyland Numbers
201st
Look and Say
245th
Morse Encoder
209th
Ordinal Numbers
291st
Rock-paper-scissors-Spock-lizard
212th