12 Days of Christmas
17th
ASCII Table
27th
11th
Fizz Buzz
68th
Foo Fizz Buzz Bar
336th
Happy Numbers
29th
609th
Leap Years
103rd1,040th
ln 2
13th
Niven Numbers
36th77th
720th
Number Spiral
25th
10th
11th
Prime Numbers
56th93rd
1,017th
Quine
81st
770th
Recamán
12th
Smith Numbers
7th
Tongue-twisters
24th
π
473rd