Abundant Numbers
32nd
Abundant Numbers (Long)
84th
Collatz
161st
CSS Colors
99th
Divisors
1st
Emirp Numbers
12th
Evil Numbers
1st
Evil Numbers (Long)
33rd
Factorial Factorisation
58th
Fibonacci
1st
Fizz Buzz
38th
Happy Numbers
1st
Kolakoski Sequence
50th
Leap Years
13th
ln 2
36th
Look and Say
37th
Lucky Numbers
61st
Niven Numbers
36th
Niven Numbers (Long)
100th
Odious Numbers
1st
Odious Numbers (Long)
74th
Ordinal Numbers
3rd
Pangram Grep
22nd
Pascal’s Triangle
41st
Pernicious Numbers
67th
Prime Numbers
73rd
Quine
1st
Recamán
33rd
Rock-paper-scissors-Spock-lizard
30th
Roman to Arabic
46th
ROT13
94th
Sierpiński Triangle
22nd
Tic-tac-toe
68th
π
101st
τ
94th
√2
1st
𝑒
1st