Christmas Trees
30th
Cubes
13th
Divisors
57th
Emirp Numbers
47th
Fibonacci
141st
Fizz Buzz
112th
Happy Numbers
50th
Morse Decoder
9th
Niven Numbers
60th
Pangram Grep
Pascal’s Triangle
49th
Prime Numbers
105th
Quine
33rd789th
Rock-paper-scissors-Spock-lizard
15th
Roman to Arabic
19th
Sierpiński Triangle
28th