12 Days of Christmas
135
99 Bottles of Beer
401
Arabic to Roman
980
Christmas Trees
165
Cubes
76
Diamonds
93
Divisors
677
Emirp Numbers
595
Evil Numbers
873
Fibonacci
857
Fizz Buzz
917
Fractions
822
Leap Years
694
787
Odious Numbers
870
Pernicious Numbers
794
Quine
1,000620
Sierpiński Triangle
146
Spelling Numbers
980
Tongue-twisters
773
λ
358