Abundant Numbers
21st
brainfuck
7th
Diamonds
6th
Divisors
9th
Emirp Numbers
24th
Evil Numbers
11th
Fibonacci
19th
Fizz Buzz
21st
Happy Numbers
26th
Leap Years
17th
Niven Numbers
63rd16th
Odious Numbers
10th
Ordinal Numbers
8th
Pangram Grep
Pascal’s Triangle
14th
Pernicious Numbers
34th
Prime Numbers
16th
Quine
1st67th
Rock-paper-scissors-Spock-lizard
4th
Sierpiński Triangle
7th
Spelling Numbers
4th
λ
14th
π
9th
τ
10th
φ
11th
√2
1st
𝑒
15th