12 Days of Christmas
406
99 Bottles of Beer
525
Abundant Numbers
632
brainfuck
431
Christmas Trees
409
CSS Colors
65
Cubes
408
Diamonds
410
Divisors
584
Emirp Numbers
325
Evil Numbers
487
Fibonacci
561768
Fizz Buzz
831
Happy Numbers
348
Leap Years
791
Niven Numbers
774
Odious Numbers
531
Pernicious Numbers
348
Prime Numbers
534
π
435