12 Days of Christmas
874
Abundant Numbers
786689
Abundant Numbers (Long)
849765
Arithmetic Numbers
811
Catalan Numbers
698
Christmas Trees
590
Collatz
872
Divisors
905
Emirp Numbers
500
Emirp Numbers (Long)
563
Evil Numbers
833
Evil Numbers (Long)
820
Farey Sequence
695
Fibonacci
947
Fizz Buzz
951
Foo Fizz Buzz Bar
740922
Happy Numbers
463
Happy Numbers (Long)
533
Inventory Sequence
684
Kolakoski Constant
70
Kolakoski Sequence
347
Leap Years
860
Look and Say
655
Lucky Numbers
450
Niven Numbers
920957
Niven Numbers (Long)
676
Odious Numbers
800
Odious Numbers (Long)
788
Ordinal Numbers
587
Pangram Grep
774
Pascal’s Triangle
740
Pernicious Numbers
449
Pernicious Numbers (Long)
565
Prime Numbers
909
Prime Numbers (Long)
978
Recamán
782
Sierpiński Triangle
564
Tongue-twisters
617600
Van Eck Sequence
651