12 Days of Christmas
136
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
706
787
Odious Numbers
870
Pernicious Numbers
794
Quine
1,000
620
Sierpiński Triangle
146
Spelling Numbers
980
Tongue-twisters
773
λ
361