99 Bottles of Beer
25th
Abundant Numbers
34th
Arabic to Roman
19th
Christmas Trees
22nd11th
27th
20th
5th
Divisors
247th
253rd
50th
Evil Numbers
105th
84th
36th
Fibonacci
323rd
365th136th46th
Fizz Buzz
84th346th
761st197th146th
Happy Numbers
104th
46th
Leap Years
124th
57th102nd45th30th104th
31st
Niven Numbers
38th
Ordinal Numbers
29th
Pascal’s Triangle
38th
Pernicious Numbers
86th
65th
34th
Prime Numbers
207th
61st
126th
Prime Numbers (Long)
1st
Quine
110th
Rock-paper-scissors-Spock-lizard
10th
Roman to Arabic
22nd
United States
16th
Van Eck Sequence
10th