12 Days of Christmas
669
99 Bottles of Beer
626
Abundant Numbers
649785
Christmas Trees
654660
Cubes
381
Diamonds
166
Divisors
919
Emirp Numbers
370
Evil Numbers
606
Fibonacci
679
Fizz Buzz
398437423596571951
Leap Years
614
Morse Encoder
277
Niven Numbers
472
698
Odious Numbers
474800
Pangram Grep
537
Pernicious Numbers
588
Prime Numbers
641
635
Roman to Arabic
452