12 Days of Christmas
86
99 Bottles of Beer
297
Arabic to Roman
964
Christmas Trees
124
Cubes
56
Diamonds
79
Divisors
626
Emirp Numbers
444
Evil Numbers
806
Fibonacci
807
Fizz Buzz
874
Fractions
704
Leap Years
633
Odious Numbers
805
Pernicious Numbers
731
Quine
948606
Sierpiński Triangle
184
Spelling Numbers
980
Tongue-twisters
469
λ
247