12 Days of Christmas
403
Abundant Numbers
499651
Abundant Numbers (Long)
542663
Arithmetic Numbers
705
Catalan Numbers
680
Christmas Trees
506
Collatz
717
Divisors
844
Emirp Numbers
397
Emirp Numbers (Long)
454
Evil Numbers
818
Evil Numbers (Long)
800
Farey Sequence
590
Fibonacci
935
Fizz Buzz
862
Foo Fizz Buzz Bar
555723
Happy Numbers
352
Happy Numbers (Long)
439
Inventory Sequence
625
Kolakoski Constant
58
Kolakoski Sequence
329
Leap Years
847
Look and Say
519
Lucky Numbers
422
Niven Numbers
541939
Niven Numbers (Long)
659
Odious Numbers
784
Odious Numbers (Long)
768
Ordinal Numbers
459
Pangram Grep
639
Pascal’s Triangle
669
Pernicious Numbers
440
Pernicious Numbers (Long)
540
Prime Numbers
892
Prime Numbers (Long)
953
Recamán
690
Sierpiński Triangle
535
Tongue-twisters
339338
Van Eck Sequence
596