12 Days of Christmas
417
99 Bottles of Beer
544
Abundant Numbers
663
brainfuck
466
Christmas Trees
431
CSS Colors
70
Cubes
437
Diamonds
438
Divisors
612
Emirp Numbers
343
Evil Numbers
515
Fibonacci
577797
Fizz Buzz
851
Happy Numbers
368
Leap Years
826
Niven Numbers
817
Odious Numbers
564
Pernicious Numbers
372
Prime Numbers
564
π
463