12 Days of Christmas
20th
99 Bottles of Beer
16th
Abundant Numbers
13th
Christmas Trees
11th
Divisors
8th
Evil Numbers
24th
112th
Fibonacci
1st
96th
Fizz Buzz
31st9th1st53rd
Foo Fizz Buzz Bar
12th
Happy Numbers
32nd
Hexdump
7th
ISBN
19th
Leap Years
19th
340th
Look and Say
16th
Lucky Numbers
23rd
Morse Encoder
10th
Niven Numbers
41st
Odious Numbers
22nd
Partition Numbers
8th
Prime Numbers
26th
Quine
1st
Reverse Polish Notation
13th
Rock-paper-scissors-Spock-lizard
10th
Scrambled Sort
5th
Vampire Numbers
13th
Van Eck Sequence
17th
Zeckendorf Representation
10th