Abundant Numbers
36th
Abundant Numbers (Long)
96th
Arithmetic Numbers
71st
Collatz
173rd
CSS Colors
103rd
Divisors
1st
Emirp Numbers
15th
Evil Numbers
1st
Evil Numbers (Long)
41st
Factorial Factorisation
67th
Fibonacci
1st
Fizz Buzz
44th
Happy Numbers
1st
Kolakoski Sequence
54th
Leap Years
16th
ln 2
46th
Look and Say
44th
Lucky Numbers
69th
Niven Numbers
44th
Niven Numbers (Long)
111th
Odious Numbers
1st
Odious Numbers (Long)
83rd
Ordinal Numbers
4th
Pangram Grep
28th
Pascal’s Triangle
46th
Pernicious Numbers
77th
Prime Numbers
85th
Quine
1st
Recamán
38th
Rock-paper-scissors-Spock-lizard
33rd
Roman to Arabic
53rd
ROT13
105th
Sierpiński Triangle
23rd
Tic-tac-toe
79th
π
112th
τ
101st
√2
1st
𝑒
1st