12 Days of Christmas
855
Abundant Numbers
495675
Abundant Numbers (Long)
543730
Arithmetic Numbers
810
Catalan Numbers
677
Christmas Trees
578
Collatz
789
Divisors
886
Emirp Numbers
481
Emirp Numbers (Long)
543
Evil Numbers
817
Evil Numbers (Long)
798
Farey Sequence
670
Fibonacci
932
Fizz Buzz
941
Foo Fizz Buzz Bar
555906
Happy Numbers
451
Happy Numbers (Long)
514
Inventory Sequence
655
Kolakoski Constant
67
Kolakoski Sequence
335
Leap Years
845
Look and Say
633
Lucky Numbers
434
Niven Numbers
535933
Niven Numbers (Long)
653
Odious Numbers
781
Odious Numbers (Long)
763
Ordinal Numbers
564
Pangram Grep
749
Pascal’s Triangle
719
Pernicious Numbers
437
Pernicious Numbers (Long)
545
Prime Numbers
891
Prime Numbers (Long)
950
Recamán
758
Sierpiński Triangle
548
Tongue-twisters
537606
Van Eck Sequence
627