12 Days of Christmas
402
Abundant Numbers
555
636
Abundant Numbers (Long)
599
689
Arabic to Roman
344
Arithmetic Numbers
624
685
Billiards
568
Christmas Trees
593
Collatz
671
784
Cubes
338
Diamonds
477
Divisors
645
706
Evil Numbers
599
Evil Numbers (Long)
600
Fibonacci
707911850553784807
Fizz Buzz
531
612
Fractions
669
Happy Numbers
416
Inventory Sequence
520
Leap Years
751716
798
781757
Niven Numbers
574
666
Niven Numbers (Long)
558
641
Number Spiral
404
Odious Numbers
526
606
Odious Numbers (Long)
622
Pascal’s Triangle
536
Pernicious Numbers
367
Prime Numbers
610
Prime Numbers (Long)
595
Quine
426
Roman to Arabic
258
ROT13
345
Seven Segment
323
Sierpiński Triangle
280
Smith Numbers
411
483
Tongue-twisters
355
373
Tower of Hanoi
545
Trinomial Triangle
291
376