Abundant Numbers
18th
brainfuck
7th
Diamonds
6th
Divisors
9th
Emirp Numbers
23rd
Evil Numbers
9th
Fibonacci
1st
Fizz Buzz
21st
Happy Numbers
16th
Leap Years
14th
Niven Numbers
61st16th
Odious Numbers
8th
Ordinal Numbers
8th
Pangram Grep
Pascal’s Triangle
14th
Pernicious Numbers
34th
Prime Numbers
15th
Quine
1st67th
Rock-paper-scissors-Spock-lizard
7th
Sierpiński Triangle
7th
Spelling Numbers
4th
λ
13th
π
9th
τ
10th
φ
13th
√2
21st
𝑒
15th