12 Days of Christmas
90th99 Bottles of Beer
36thAbundant Numbers
43rdbrainfuck
14thCatalan Numbers
22ndCollatz
43rdDiamonds
26thDivisors
12thEvil Numbers
51stFibonacci
23rdFizz Buzz
17th
1stFoo Fizz Buzz Bar
43rdIntersection
23rdLeap Years
60thLook and Say
22ndMorse Encoder
16thNiven Numbers
74thOdious Numbers
51stPangram Grep
46thPernicious Numbers
36thPrime Numbers
36thRecamΓ‘n
15thRoman to Arabic
15th
Spelling Numbers
19thUnited States
20thΟ
14thβ2
32ndπ
10th