12 Days of Christmas
89899 Bottles of Beer
884Abundant Numbers
765Arabic to Roman
855Christmas Trees
944CSS Colors
312Divisors
950Emirp Numbers
624Evil Numbers
816Fibonacci
947Fizz Buzz
951Happy Numbers
721Leap Years
782Look and Say
497Morse Decoder
400Niven Numbers
815Odious Numbers
800Ordinal Numbers
764Pangram Grep
889Pascalβs Triangle
563Pernicious Numbers
702Prime Numbers
656Rock-paper-scissors-Spock-lizard
662Roman to Arabic
624Tongue-twisters
795United States
375