Abundant Numbers
636
Abundant Numbers (Long)
756
Arrows
479
Collatz
952
Divisors
660
Emirp Numbers
546
Emirp Numbers (Long)
594
Evil Numbers
741
Evil Numbers (Long)
769
Factorial Factorisation
96
Fizz Buzz
544
Foo Fizz Buzz Bar
565
Happy Numbers
675
Happy Numbers (Long)
124
Leap Years
57
Niven Numbers
646
Odious Numbers
739
Odious Numbers (Long)
767
Pernicious Numbers
738
Prime Numbers
633
Prime Numbers (Long)
669
Quine
891
Sierpiński Triangle
99
Tongue-twisters
527