12 Days of Christmas
361
99 Bottles of Beer
366
Abundant Numbers
698
Arabic to Roman
416
Christmas Trees
548
Diamonds
495
Divisors
844
Emirp Numbers
422
Fibonacci
935
Fizz Buzz
641
Fractions
303
Intersection
426
Kolakoski Sequence
428
Leap Years
652
Niven Numbers
831
Niven Numbers (Long)
787
Number Spiral
162
Ordinal Numbers
541
Pangram Grep
Pernicious Numbers
483
Prime Numbers
569
Quine
947
Recamán
591
Tongue-twisters
277
Van Eck Sequence
339
π
56