12 Days of Christmas
668
99 Bottles of Beer
600
Abundant Numbers
696
Abundant Numbers (Long)
693
Arabic to Roman
521
Arithmetic Numbers
704
Christmas Trees
568
Collatz
727
Divisors
824
Emirp Numbers
508
Emirp Numbers (Long)
218
Emojify
419
Evil Numbers
817
Evil Numbers (Long)
797
Fibonacci
601
Fizz Buzz
846
Foo Fizz Buzz Bar
712
Happy Numbers
483
Happy Numbers (Long)
491
Leap Years
768
Look and Say
524
Lucky Numbers
589
Niven Numbers
671
Niven Numbers (Long)
733
Odious Numbers
849
Odious Numbers (Long)
827
Pascal’s Triangle
600
Pernicious Numbers
735
Pernicious Numbers (Long)
737
Tongue-twisters
660
Transpose Sentence
564
United States
757
Vampire Numbers
564