12 Days of Christmas
86
99 Bottles of Beer
298
Arabic to Roman
963
Christmas Trees
127
Cubes
59
Diamonds
83
Divisors
626
Emirp Numbers
443
Evil Numbers
805
Fibonacci
806
Fizz Buzz
874
Fractions
702
Leap Years
633
712
Odious Numbers
803
Pernicious Numbers
731
Quine
948606
Sierpiński Triangle
184
Spelling Numbers
980
Tongue-twisters
468
λ
250