12 Days of Christmas
918
Abundant Numbers
773
Abundant Numbers (Long)
925
Arabic to Roman
899
Arithmetic Numbers
901
Ascending Primes
544
Catalan Numbers
917
Christmas Trees
721
Collatz
907
Day of Week
859
Divisors
919
Evil Numbers
1,000
Evil Numbers (Long)
976
Farey Sequence
595
Fibonacci
625947
Fizz Buzz
733951
Foo Fizz Buzz Bar
922
Fractions
973
Happy Numbers
738
Happy Numbers (Long)
847
ISBN
867
Leap Years
768
Look and Say
796
Lucky Numbers
730
Niven Numbers
800
Niven Numbers (Long)
893
Odious Numbers
870
Odious Numbers (Long)
872
Ordinal Numbers
931
Pangram Grep
889
Pascal’s Triangle
947
Pernicious Numbers
800
Pernicious Numbers (Long)
852
Prime Numbers
976
Prime Numbers (Long)
721
Quine
1,000969
Roman to Arabic
721
Tongue-twisters
720
Vampire Numbers
822