Abundant Numbers
21st
brainfuck
7th
Diamonds
9th
Divisors
10th
Emirp Numbers
26th
Evil Numbers
13th
Fibonacci
1st
Fizz Buzz
22nd
Happy Numbers
19th
Leap Years
16th
Niven Numbers
67th21st
Odious Numbers
8th
Ordinal Numbers
9th
Pangram Grep
Pascal’s Triangle
15th
Pernicious Numbers
37th
Prime Numbers
15th
Quine
1st85th
Rock-paper-scissors-Spock-lizard
7th
Sierpiński Triangle
8th
Spelling Numbers
5th
λ
15th
π
10th
τ
11th
φ
14th
√2
22nd
𝑒
19th