12 Days of Christmas
134
99 Bottles of Beer
374
Arabic to Roman
958
Christmas Trees
122
Cubes
44
Diamonds
69
Divisors
613
Emirp Numbers
540
Evil Numbers
802
Fibonacci
801
Fizz Buzz
869
Fractions
704
Leap Years
628
Odious Numbers
796
Pernicious Numbers
721
Quine
943605
Sierpiński Triangle
130
Spelling Numbers
980
Tongue-twisters
659
λ
305