99 Bottles of Beer
17th
Arabic to Roman
Christmas Trees
9th
Cubes
3rd
Diamonds
5th
Divisors
1st52nd
Emirp Numbers
18th
Evil Numbers
38th
Fibonacci
71st
Fizz Buzz
28th
Happy Numbers
Leap Years
17th
Leyland Numbers
16th
Niven Numbers
32nd
Odious Numbers
35th
Ordinal Numbers
17th
Pangram Grep
18th
Pascalβs Triangle
20th
Pernicious Numbers
30th
Prime Numbers
41st
Quine
58th