99 Bottles of Beer
17th
Arabic to Roman
Christmas Trees
8th
Cubes
3rd
Diamonds
5th
Divisors
1st50th
Emirp Numbers
17th
Evil Numbers
35th
Fibonacci
69th
Fizz Buzz
27th
Happy Numbers
Leap Years
17th
Leyland Numbers
14th
Niven Numbers
31st
Odious Numbers
33rd
Ordinal Numbers
15th
Pangram Grep
15th
Pascalβs Triangle
19th
Pernicious Numbers
29th
Prime Numbers
40th
Quine
56th