Abundant Numbers
51st
Abundant Numbers (Long)
28th
Collatz
103rd
CSS Colors
138th
Divisors
1st
Emirp Numbers
99th
Evil Numbers
1st
Evil Numbers (Long)
33rd
Factorial Factorisation
43rd
Fibonacci
1st
Fizz Buzz
54th
Happy Numbers
52nd
Kolakoski Sequence
70th
Leap Years
13th
ln 2
1st
Look and Say
83rd
Lucky Numbers
58th
Niven Numbers
35th
Niven Numbers (Long)
86th
Odious Numbers
1st
Odious Numbers (Long)
72nd
Ordinal Numbers
65th
Pangram Grep
36th
Pascal’s Triangle
75th
Pernicious Numbers
67th
Prime Numbers
73rd
Quine
1st
Recamán
67th
Rock-paper-scissors-Spock-lizard
71st
Roman to Arabic
98th
ROT13
76th
Sierpiński Triangle
36th
Tic-tac-toe
58th
π
93rd
τ
89th
√2
1st
𝑒
1st