99 Bottles of Beer
24th
Abundant Numbers
31st
Arabic to Roman
17th
Christmas Trees
22nd
9th
25th
18th
4th
Divisors
211th
227th
43rd
Evil Numbers
88th
74th
32nd
Fibonacci
264th
315th
107th
39th
Fizz Buzz
74th
288th
666th
171st
130th
Happy Numbers
88th
39th
Leap Years
103rd
44th
86th
39th
28th
96th
35th
Niven Numbers
32nd
Ordinal Numbers
26th
Pascalβs Triangle
32nd
Pernicious Numbers
66th
55th
28th
Prime Numbers
182nd
50th
101st
Prime Numbers (Long)
1st
Quine
94th
Rock-paper-scissors-Spock-lizard
11th
Roman to Arabic
19th
United States
15th
Van Eck Sequence
8th