12 Days of Christmas
9th
99 Bottles of Beer
24th
Abundant Numbers
10th
Arrows
18th
ASCII Table
16th
Christmas Trees
35th
CSS Colors
16th
Cubes
15th
Diamonds
9th
Divisors
14th
Evil Numbers (Long)
49th
Fibonacci
89th
Fizz Buzz
52nd292nd
Foo Fizz Buzz Bar
43rd
Happy Numbers
22nd
ISBN
12th
Look and Say
17th
Niven Numbers (Long)
47th
Number Spiral
12th
Poker
15th
Quine
1st
Reverse Polish Notation
8th
Rule 110
18th
Time Distance
12th
Zodiac Signs
13th