99 Bottles of Beer
30th
Divisors
222nd68th
Emirp Numbers
40th
Evil Numbers
120th72nd
Fibonacci
386th145th
Fizz Buzz
445th131st
Happy Numbers
66th
Leap Years
149th56th
Niven Numbers
127th85th
Odious Numbers
100th63rd
Pascal’s Triangle
108th44th
Pernicious Numbers
30th
Prime Numbers
247th74th
Roman to Arabic
26th
Rule 110
43rd
Spelling Numbers
14th
√2
27th