12 Days of Christmas
15th
99 Bottles of Beer
21st
Abundant Numbers
Arrows
17th
ASCII Table
15th
Christmas Trees
32nd
CSS Colors
13th
Cubes
Diamonds
6th
Divisors
12th
Evil Numbers (Long)
Fibonacci
73rd
Fizz Buzz
45th273rd
Foo Fizz Buzz Bar
Happy Numbers
16th
ISBN
12th
Look and Say
13th
Niven Numbers (Long)
Number Spiral
8th
Poker
10th
Quine
1st
Reverse Polish Notation
Rule 110
15th
Time Distance
Zodiac Signs
13th