Abundant Numbers
600
578
592
807
645
Arrows
490
Collatz
732
640
CSS Colors
86
Emirp Numbers
302
Evil Numbers
800
Fibonacci
947
Fizz Buzz
766
693
898
564
Foo Fizz Buzz Bar
780
795
Fractions
639
Happy Numbers
495
Happy Numbers (Long)
629
ISBN
452
Niven Numbers
570
786
Odious Numbers
800
Ordinal Numbers
759
Pangram Grep
709
Pernicious Numbers
370
Prime Numbers
465
Prime Numbers (Long)
352
Quine
734
694
969
RecamΓ‘n
430
Smith Numbers
406
Tongue-twisters
421
505
United States
165
β2
690
π
686