12 Days of Christmas
673
99 Bottles of Beer
620
Abundant Numbers
697
brainfuck
434
Christmas Trees
406
CSS Colors
65
Cubes
417
Diamonds
406
Divisors
578
Emirp Numbers
476
Evil Numbers
496
Fibonacci
572766
Fizz Buzz
828
Happy Numbers
469
Leap Years
762
Niven Numbers
793
Odious Numbers
548
Pernicious Numbers
347
Prime Numbers
623
π
439