Abundant Numbers
35th
Abundant Numbers (Long)
94th
Arithmetic Numbers
71st
Collatz
171st
CSS Colors
102nd
Divisors
1st
Emirp Numbers
15th
Evil Numbers
1st
Evil Numbers (Long)
38th
Factorial Factorisation
65th
Fibonacci
1st
Fizz Buzz
42nd
Happy Numbers
1st
Kolakoski Sequence
53rd
Leap Years
14th
ln 2
42nd
Look and Say
41st
Lucky Numbers
67th
Niven Numbers
39th
Niven Numbers (Long)
109th
Odious Numbers
1st
Odious Numbers (Long)
81st
Ordinal Numbers
3rd
Pangram Grep
26th
Pascal’s Triangle
44th
Pernicious Numbers
77th
Prime Numbers
82nd
Quine
1st
Recamán
37th
Rock-paper-scissors-Spock-lizard
31st
Roman to Arabic
52nd
ROT13
103rd
Sierpiński Triangle
23rd
Tic-tac-toe
73rd
π
108th
τ
99th
√2
1st
𝑒
1st