12 Days of Christmas
499
99 Bottles of Beer
524
Abundant Numbers
631
brainfuck
451
Christmas Trees
408
CSS Colors
65
Cubes
429
Diamonds
409
Divisors
583
Emirp Numbers
325
Evil Numbers
487
Fibonacci
561
767
Fizz Buzz
897
Happy Numbers
347
Leap Years
791
Niven Numbers
773
Odious Numbers
531
Pernicious Numbers
347
Prime Numbers
532
π
434