Abundant Numbers
8th
brainfuck
21st
Christmas Trees
24th
Cubes
8th
Emirp Numbers
22nd
Evil Numbers
48th
Fibonacci
1st
Fizz Buzz
18th
Intersection
15th
Leap Years
72nd
Niven Numbers
64th
Odious Numbers
41st
Ordinal Numbers
34th
Pascal’s Triangle
14th
Pernicious Numbers
39th
Prime Numbers
52nd
United States
16th