12 Days of Christmas
773
99 Bottles of Beer
694
Christmas Trees
825
716
Divisors
851
Emirp Numbers
519
Evil Numbers
816
Fibonacci
915
878
Fizz Buzz
378
931
935
ISBN
879
Leap Years
620
632
Morse Encoder
344
Niven Numbers
733
Ordinal Numbers
664
717
Pernicious Numbers
645
Prime Numbers
588
Spelling Numbers
480
Zodiac Signs
576