Abundant Numbers
51st
Abundant Numbers (Long)
28th
Arithmetic Numbers
23rd
Collatz
109th
CSS Colors
141st
Divisors
1st
Emirp Numbers
107th
Evil Numbers
1st
Evil Numbers (Long)
35th
Factorial Factorisation
45th
Fibonacci
1st
Fizz Buzz
55th
Happy Numbers
57th
Kolakoski Sequence
72nd
Leap Years
14th
ln 2
1st
Look and Say
89th
Lucky Numbers
60th
Niven Numbers
37th
Niven Numbers (Long)
90th
Odious Numbers
1st
Odious Numbers (Long)
78th
Ordinal Numbers
68th
Pangram Grep
39th
Pascal’s Triangle
75th
Pernicious Numbers
72nd
Prime Numbers
78th
Quine
1st
Recamán
70th
Rock-paper-scissors-Spock-lizard
72nd
Roman to Arabic
103rd
ROT13
82nd
Sierpiński Triangle
36th
Tic-tac-toe
62nd
π
97th
τ
92nd
√2
1st
𝑒
1st