12 Days of Christmas
24 Game
99 Bottles of Beer
Abundant Numbers
Abundant Numbers (Long)
Arabic to Roman
Arithmetic Numbers
Arrows
Ascending Primes
ASCII Table
Card Number Validation
Catalan Numbers
Christmas Trees
Collatz
CSS Colors
Day of Week
Emirp Numbers
Farey Sequence
Fibonacci
864985
Fizz Buzz
899949
Forsyth–Edwards Notation
Look and Say
Lucky Numbers
Medal Tally
Niven Numbers
PalindromemordnilaP
Pascal’s Triangle
Pernicious Numbers
Prime Numbers
7911,000
Prime Numbers (Long)
ROT13
Seven Segment
Sierpiński Triangle
Spelling Numbers