12 Days of Christmas
683
Abundant Numbers
595
687
Abundant Numbers (Long)
611
692
Arabic to Roman
344
Arithmetic Numbers
632
685
Billiards
571
Christmas Trees
596
Collatz
684
786
Cubes
352
Diamonds
481
Divisors
645
706
Evil Numbers
616
Evil Numbers (Long)
600
Fibonacci
723911850586784807
Fizz Buzz
532
614
Fractions
669
Happy Numbers
521
Inventory Sequence
520
Leap Years
753717
799
783757
Niven Numbers
577
670
Niven Numbers (Long)
560
651
Number Spiral
404
Odious Numbers
526
615
Odious Numbers (Long)
622
Pascal’s Triangle
536
Pernicious Numbers
367
Prime Numbers
636
Prime Numbers (Long)
595
Quine
442
Roman to Arabic
264
ROT13
345
Seven Segment
329
Sierpiński Triangle
286
Smith Numbers
415
483
Tongue-twisters
509
525
Tower of Hanoi
545
Trinomial Triangle
291
376