Abundant Numbers
54th
Abundant Numbers (Long)
32nd
Arithmetic Numbers
23rd
Collatz
111th
CSS Colors
141st
Divisors
1st
Emirp Numbers
108th
Evil Numbers
1st
Evil Numbers (Long)
38th
Factorial Factorisation
49th
Fibonacci
1st
Fizz Buzz
58th
Happy Numbers
63rd
Kolakoski Sequence
73rd
Leap Years
14th
ln 2
1st
Look and Say
90th
Lucky Numbers
61st
Niven Numbers
39th
Niven Numbers (Long)
94th
Odious Numbers
1st
Odious Numbers (Long)
81st
Ordinal Numbers
69th
Pangram Grep
42nd
Pascal’s Triangle
77th
Pernicious Numbers
75th
Prime Numbers
81st
Quine
1st
Recamán
72nd
Rock-paper-scissors-Spock-lizard
73rd
Roman to Arabic
105th
ROT13
84th
Sierpiński Triangle
37th
Tic-tac-toe
62nd
π
99th
τ
93rd
√2
1st
𝑒
1st