Abundant Numbers
614607602513
657
Arrows
421
Collatz
689
691
CSS Colors
187
Emirp Numbers
359
Evil Numbers
784
Fibonacci
932
Fizz Buzz
749
664
973515
Foo Fizz Buzz Bar
735
981
Fractions
730
Happy Numbers
495
Happy Numbers (Long)
493
ISBN
559
Niven Numbers
541
767
Odious Numbers
781
Ordinal Numbers
706
Pangram Grep
811
Pernicious Numbers
360
Prime Numbers
456
Prime Numbers (Long)
342
Quine
439672945
Recamán
462
Smith Numbers
535
Tongue-twisters
586
748
United States
170
√2
671
𝑒
665