Abundant Numbers
17th
brainfuck
7th
Diamonds
6th
Divisors
8th
Emirp Numbers
21st
Evil Numbers
8th
Fibonacci
1st
Fizz Buzz
19th
Happy Numbers
15th
Leap Years
13th
Niven Numbers
58th15th
Odious Numbers
6th
Ordinal Numbers
7th
Pangram Grep
Pascal’s Triangle
14th
Pernicious Numbers
30th
Prime Numbers
14th
Quine
1st63rd
Rock-paper-scissors-Spock-lizard
7th
Sierpiński Triangle
6th
Spelling Numbers
4th
λ
13th
π
9th
τ
10th
φ
12th
√2
21st
𝑒
15th