Abundant Numbers
20th
brainfuck
7th
Diamonds
9th
Divisors
9th
Emirp Numbers
26th
Evil Numbers
12th
Fibonacci
1st
Fizz Buzz
22nd
Happy Numbers
19th
Leap Years
16th
Niven Numbers
65th20th
Odious Numbers
8th
Ordinal Numbers
9th
Pangram Grep
Pascal’s Triangle
15th
Pernicious Numbers
36th
Prime Numbers
15th
Quine
1st82nd
Rock-paper-scissors-Spock-lizard
7th
Sierpiński Triangle
7th
Spelling Numbers
5th
λ
15th
π
10th
τ
11th
φ
14th
√2
22nd
𝑒
18th