12 Days of Christmas
135
99 Bottles of Beer
389
Arabic to Roman
965
Christmas Trees
151
Cubes
54
Diamonds
84
Divisors
625
Emirp Numbers
543
Evil Numbers
803
Fibonacci
805
Fizz Buzz
880
Fractions
719
Leap Years
644
711
Odious Numbers
802
Pernicious Numbers
731
Quine
947605
Sierpiński Triangle
134
Spelling Numbers
980
Tongue-twisters
680
λ
334