12 Days of Christmas
78
99 Bottles of Beer
201
Abundant Numbers
341
Christmas Trees
409
Day of Week
500
Diamonds
407
Divisors
555
Emirp Numbers
194
Evil Numbers
334
Fibonacci
484
Fizz Buzz
767
Foo Fizz Buzz Bar
441
Leap Years
376
Niven Numbers
492
Odious Numbers
312
Pernicious Numbers
186
Prime Numbers
669
Tongue-twisters
343
United States
163