12 Days of Christmas
407
99 Bottles of Beer
525
Abundant Numbers
633
brainfuck
431
Christmas Trees
409
CSS Colors
65
Cubes
408
Diamonds
411
Divisors
584
Emirp Numbers
326
Evil Numbers
488
Fibonacci
562769
Fizz Buzz
831
Happy Numbers
348
Leap Years
792
Niven Numbers
775
Odious Numbers
532
Pernicious Numbers
349
Prime Numbers
534
π
436