12 Days of Christmas
16th
99 Bottles of Beer
21st
Abundant Numbers
17th
Arrows
18th
ASCII Table
15th
Christmas Trees
33rd
CSS Colors
13th
Cubes
12th
Diamonds
9th
Divisors
12th
Evil Numbers (Long)
36th
Fibonacci
73rd
Fizz Buzz
42nd271st
Foo Fizz Buzz Bar
37th
Happy Numbers
16th
ISBN
12th
Look and Say
15th
Niven Numbers (Long)
35th
Number Spiral
11th
Poker
11th
Quine
1st
Reverse Polish Notation
8th
Rule 110
18th
Time Distance
12th
Zodiac Signs
13th