12 Days of Christmas
789
99 Bottles of Beer
590
Abundant Numbers
537
Christmas Trees
626
Divisors
727679
Emirp Numbers
402
Evil Numbers
548
Fibonacci
383
Fizz Buzz
424586
Foo Fizz Buzz Bar
517589
Leap Years
729
Niven Numbers
518
Odious Numbers
548
Pernicious Numbers
513
Prime Numbers
430
Quine
596
Tongue-twisters
559