Abundant Numbers
577
550
560
760
633
Arrows
477
Collatz
691
626
CSS Colors
82
Emirp Numbers
297
Evil Numbers
785
Fibonacci
934
Fizz Buzz
750
672
891
532
Foo Fizz Buzz Bar
742
783
Fractions
619
Happy Numbers
485
Happy Numbers (Long)
610
ISBN
438
Niven Numbers
546
770
Odious Numbers
783
Ordinal Numbers
738
Pangram Grep
690
Pernicious Numbers
362
Prime Numbers
456
Prime Numbers (Long)
342
Quine
684
673
946
RecamΓ‘n
420
Smith Numbers
394
Tongue-twisters
408
502
United States
162
β2
674
π
668