12 Days of Christmas
839
Abundant Numbers
496675
Abundant Numbers (Long)
544742
Arithmetic Numbers
810
Catalan Numbers
677
Christmas Trees
577
Collatz
789
Divisors
871
Emirp Numbers
481
Emirp Numbers (Long)
521
Evil Numbers
817
Evil Numbers (Long)
797
Farey Sequence
611
Fibonacci
933
Fizz Buzz
941
Foo Fizz Buzz Bar
554905
Happy Numbers
451
Happy Numbers (Long)
515
Inventory Sequence
656
Kolakoski Constant
66
Kolakoski Sequence
334
Leap Years
845
Look and Say
633
Lucky Numbers
433
Niven Numbers
535933
Niven Numbers (Long)
653
Odious Numbers
781
Odious Numbers (Long)
764
Ordinal Numbers
563
Pangram Grep
750
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
527595
Van Eck Sequence
627