12 Days of Christmas
413
99 Bottles of Beer
391
Abundant Numbers
576
Abundant Numbers (Long)
630
Arithmetic Numbers
641
Christmas Trees
402
Collatz
627
Diamonds
537429
379
Divisors
645
Emirp Numbers
373
Emirp Numbers (Long)
505
Fibonacci
484
Fizz Buzz
649638
Foo Fizz Buzz Bar
526
Intersection
537
ISBN
526
Leap Years
701
872
Leyland Numbers
373
Niven Numbers
500
Niven Numbers (Long)
630
Odious Numbers
301
Odious Numbers (Long)
304
Ordinal Numbers
370
Prime Numbers
490
Prime Numbers (Long)
509
Sierpiński Triangle
131