12 Days of Christmas
919
Abundant Numbers
727
Abundant Numbers (Long)
796
Arabic to Roman
622
Arithmetic Numbers
730
Ascending Primes
454
Catalan Numbers
888
Christmas Trees
615
Collatz
743
Day of Week
663
Divisors
837
Evil Numbers
980
Evil Numbers (Long)
949
Farey Sequence
472
Fibonacci
597932
Fizz Buzz
708937
Foo Fizz Buzz Bar
926
Fractions
848
Happy Numbers
558
Happy Numbers (Long)
693
ISBN
654
Leap Years
754
Look and Say
775
Lucky Numbers
676
Niven Numbers
781
Niven Numbers (Long)
863
Odious Numbers
849
Odious Numbers (Long)
845
Ordinal Numbers
727
Pangram Grep
730
Pascal’s Triangle
901
Pernicious Numbers
779
Pernicious Numbers (Long)
773
Prime Numbers
956
Prime Numbers (Long)
701
Quine
962945
Roman to Arabic
526
Tongue-twisters
397
Vampire Numbers
581