99 Bottles of Beer
557
Arithmetic Numbers
408
Christmas Trees
232
Collatz
457
Divisors
499
Emirp Numbers
283
Emirp Numbers (Long)
318
Evil Numbers
478
Evil Numbers (Long)
475
Fibonacci
302
506
Fizz Buzz
491
Foo Fizz Buzz Bar
396
Happy Numbers
247
Happy Numbers (Long)
312
Look and Say
328
Niven Numbers
573565
Niven Numbers (Long)
647
Ordinal Numbers
272
387
Pangram Grep
425
Pernicious Numbers (Long)
472
Prime Numbers
316
Prime Numbers (Long)
375
Vampire Numbers
241
Van Eck Sequence
532
√2
560