12 Days of Christmas
363
99 Bottles of Beer
369
Abundant Numbers
710
Arabic to Roman
425
Christmas Trees
557
Diamonds
505
Divisors
857
Emirp Numbers
430
Fibonacci
947
Fizz Buzz
646
Fractions
312
Intersection
439
Kolakoski Sequence
443
Leap Years
662
Niven Numbers
846
Niven Numbers (Long)
806
Number Spiral
167
Ordinal Numbers
555
Pangram Grep
Pernicious Numbers
494
Prime Numbers
580
Quine
969
Recamán
604
Tongue-twisters
279
Van Eck Sequence
351
π
57