99 Bottles of Beer
19th
Arabic to Roman
Christmas Trees
10th
Cubes
4th
Diamonds
7th
Divisors
1st56th
Emirp Numbers
22nd
Evil Numbers
41st
Fibonacci
Fizz Buzz
29th
Happy Numbers
Leap Years
19th
Leyland Numbers
18th
Niven Numbers
38th
Odious Numbers
40th
Ordinal Numbers
19th
Pangram Grep
18th
Pascal’s Triangle
24th
Pernicious Numbers
35th
Prime Numbers
43rd
Quine
65th