12 Days of Christmas
863
99 Bottles of Beer
644
Abundant Numbers
728
Abundant Numbers (Long)
738
Arabic to Roman
468
Arithmetic Numbers
748
Christmas Trees
540
Collatz
901
Divisors
891
Emirp Numbers
479
Emirp Numbers (Long)
155
Emojify
420
Evil Numbers
755
Evil Numbers (Long)
740
Fibonacci
602
Fizz Buzz
929
Foo Fizz Buzz Bar
900
Happy Numbers
498
Happy Numbers (Long)
573
Leap Years
771
Look and Say
477
Lucky Numbers
540
Niven Numbers
677
Niven Numbers (Long)
741
Odious Numbers
784
Odious Numbers (Long)
767
Pascal’s Triangle
572
Pernicious Numbers
686
Pernicious Numbers (Long)
744
Tongue-twisters
708
Transpose Sentence
520
United States
815
Vampire Numbers
530