12 Days of Christmas
17th99 Bottles of Beer
13thAbundant Numbers
16thbrainfuck
8thChristmas Trees
18thDiamonds
10thDivisors
2ndEmirp Numbers
8thEvil Numbers
28thFibonacci
57thFizz Buzz
86thLeap Years
39thNiven Numbers
27thOdious Numbers
27thOrdinal Numbers
11thPangram Grep
21stPascalβs Triangle
15thPernicious Numbers
27thPrime Numbers
10thQuine
8thUnited States
9th