12 Days of Christmas
918Abundant Numbers
788Abundant Numbers (Long)
896Arithmetic Numbers
901Ascending Primes
544Catalan Numbers
917Christmas Trees
791Collatz
907Day of Week
859Divisors
919Evil Numbers
1,000Evil Numbers (Long)
976Farey Sequence
595Fibonacci
625
947Fizz Buzz
951Foo Fizz Buzz Bar
922Fractions
933Happy Numbers
738Happy Numbers (Long)
847ISBN
886Leap Years
768Look and Say
796Lucky Numbers
743Niven Numbers
800Niven Numbers (Long)
893Odious Numbers
870Odious Numbers (Long)
872Ordinal Numbers
931Pangram Grep
889Pascalβs Triangle
947Pernicious Numbers
800Pernicious Numbers (Long)
852Prime Numbers
976Prime Numbers (Long)
721Quine
1,000
969Tongue-twisters
720Vampire Numbers
822