12 Days of Christmas
868
Abundant Numbers
743679
Abundant Numbers (Long)
788747
Arithmetic Numbers
810
Catalan Numbers
679
Christmas Trees
581
Collatz
854
Divisors
890
Emirp Numbers
490
Emirp Numbers (Long)
545
Evil Numbers
818
Evil Numbers (Long)
799
Fibonacci
935
Fizz Buzz
945
Foo Fizz Buzz Bar
703909
Happy Numbers
453
Happy Numbers (Long)
517
Inventory Sequence
659
Kolakoski Constant
69
Kolakoski Sequence
334
Leap Years
848
Look and Say
637
Lucky Numbers
437
Niven Numbers
862941
Niven Numbers (Long)
660
Odious Numbers
783
Odious Numbers (Long)
766
Ordinal Numbers
572
Pangram Grep
753
Pascal’s Triangle
721
Pernicious Numbers
439
Pernicious Numbers (Long)
549
Prime Numbers
892
Prime Numbers (Long)
951
Recamán
764
Sierpiński Triangle
563
Tongue-twisters
595596
Van Eck Sequence
628