12 Days of Christmas
170
99 Bottles of Beer
337
Abundant Numbers
344
Christmas Trees
413
Day of Week
500
Diamonds
406
Divisors
555
Emirp Numbers
309
Evil Numbers
333
Fibonacci
484
Fizz Buzz
773
Foo Fizz Buzz Bar
472
Leap Years
377
Niven Numbers
498
Odious Numbers
312
Pernicious Numbers
186
Prime Numbers
668
Tongue-twisters
581
United States
166