Abundant Numbers
709
Arabic to Roman
439
Christmas Trees
597
Diamonds
461
Divisors
858
Emirp Numbers
510
Evil Numbers
786
Fibonacci
935
Fizz Buzz
891
Happy Numbers
501
Leap Years
815
Leyland Numbers
737
Niven Numbers
744
Odious Numbers
784
Ordinal Numbers
631
Pangram Grep
639
Pascal’s Triangle
659
Pernicious Numbers
686
Prime Numbers
633
Quine
944
√2
614