12 Days of Christmas
308
99 Bottles of Beer
363
Abundant Numbers
425
602546
Arabic to Roman
208
Christmas Trees
559
Divisors
673508
Emirp Numbers
439
Evil Numbers
510
Fibonacci
845688
Fizz Buzz
511598862607
Foo Fizz Buzz Bar
739
Happy Numbers
517
Happy Numbers (Long)
623
Leap Years
651
Leyland Numbers
468
Look and Say
461
Niven Numbers
799
Odious Numbers
509
Pernicious Numbers
379
Prime Numbers
688
Prime Numbers (Long)
738
RecamΓ‘n
554
Smith Numbers
431
Van Eck Sequence
387