12 Days of Christmas
840
99 Bottles of Beer
717
Abundant Numbers
770
Abundant Numbers (Long)
810
Arabic to Roman
629
Arithmetic Numbers
827
Collatz
808
Divisors
937
Emirp Numbers
420
Fibonacci
805
Fizz Buzz
942973841
Leap Years
806
Leyland Numbers
687
Niven Numbers
728916
Pascal’s Triangle
569
Pernicious Numbers
607
Prime Numbers
884
Prime Numbers (Long)
926
Van Eck Sequence
519
π
486