Abundant Numbers
631
Christmas Trees
494
Collatz
193
708
Divisors
529
Emirp Numbers
371
Evil Numbers
480
665
Fibonacci
324
466482
Fizz Buzz
600552600719
Foo Fizz Buzz Bar
728
Fractions
521
Gijswijt’s Sequence
85
Leap Years
544
436
Niven Numbers
671
Number Spiral
201
Odious Numbers
489
574
Pernicious Numbers
493
Prime Numbers
523
Prime Numbers (Long)
555
Quine
946
Sierpiński Triangle
130
Tongue-twisters
276
√2
676