12 Days of Christmas
15th
99 Bottles of Beer
28th
Abundant Numbers
30th
23rd
Abundant Numbers (Long)
30th
Arabic to Roman
63rd
Arithmetic Numbers
15th
27th
ASCII Table
31st
brainfuck
63rd
Catalan Numbers
47th
Christmas Trees
46th
Collatz
59th
CSS Colors
46th
Day of Week
1st
Divisors
26th
Emirp Numbers
39th
Emirp Numbers (Long)
27th
Evil Numbers
3rd
Evil Numbers (Long)
17th
20th
1st
Fibonacci
368th
Fizz Buzz
14th
109th
86th
116th
1st
19th
Fractions
20th
21st
Happy Numbers
70th
ISBN
41st
45th
Leap Years
62nd
1st
Look and Say
60th
Niven Numbers
49th
1st
Odious Numbers
11th
Odious Numbers (Long)
10th
Ordinal Numbers
79th
Pangram Grep
54th
Pernicious Numbers (Long)
33rd
Prime Numbers
25th
75th
Quine
25th
Recamán
35th
Reverse Polish Notation
26th
Tongue-twisters
20th
Van Eck Sequence
18th