12 Days of Christmas
704
99 Bottles of Beer
625
Abundant Numbers
703
brainfuck
431
Christmas Trees
410
CSS Colors
65
Cubes
444
Diamonds
412
Divisors
583
Emirp Numbers
478
Evil Numbers
496
Fibonacci
573767
Fizz Buzz
900
Happy Numbers
472
Leap Years
819
Niven Numbers
803
Odious Numbers
550
Pernicious Numbers
347
Prime Numbers
621
π
442