12 Days of Christmas
950
Abundant Numbers
730
Abundant Numbers (Long)
801
Arabic to Roman
623
Arithmetic Numbers
747
Ascending Primes
456
Catalan Numbers
892
Christmas Trees
617
Collatz
745
Day of Week
661
Divisors
858
Evil Numbers
982
Evil Numbers (Long)
952
Farey Sequence
505
Fibonacci
603935
Fizz Buzz
713939
Foo Fizz Buzz Bar
929
Fractions
848
Happy Numbers
561
Happy Numbers (Long)
697
ISBN
656
Leap Years
756
Look and Say
781
Lucky Numbers
683
Niven Numbers
785
Niven Numbers (Long)
871
Odious Numbers
852
Odious Numbers (Long)
849
Ordinal Numbers
739
Pangram Grep
734
Pascal’s Triangle
903
Pernicious Numbers
782
Pernicious Numbers (Long)
814
Prime Numbers
957
Prime Numbers (Long)
702
Quine
967946
Roman to Arabic
528
Tongue-twisters
398
Vampire Numbers
589