12 Days of Christmas
169
99 Bottles of Beer
336
Abundant Numbers
344
Christmas Trees
413
Day of Week
500
Diamonds
406
Divisors
555
Emirp Numbers
309
Evil Numbers
334
Fibonacci
484
Fizz Buzz
773
Foo Fizz Buzz Bar
473
Leap Years
377
Niven Numbers
498
Odious Numbers
312
Pernicious Numbers
186
Prime Numbers
669
Tongue-twisters
581
United States
166