99 Bottles of Beer
207
Abundant Numbers
690
Arabic to Roman
411
Catalan Numbers
620
Christmas Trees
621
Divisors
614
Emirp Numbers
407
Evil Numbers
727
Fibonacci
923
Fizz Buzz
898
Foo Fizz Buzz Bar
795
Fractions
484
Happy Numbers
436
Happy Numbers (Long)
550
Kolakoski Sequence
630
Leap Years
811
Leyland Numbers
574
Niven Numbers
863
Number Spiral
208
Odious Numbers
727
Ordinal Numbers
398
Pangram Grep
Pascal’s Triangle
521
Pernicious Numbers
606
Prime Numbers
656
Prime Numbers (Long)
698
Quine
969
Recamán
647
Roman to Arabic
307
Sierpiński Triangle
607
Smith Numbers
517
Spelling Numbers
220
Tongue-twisters
339
Van Eck Sequence
321