Abundant Numbers
63rd
Abundant Numbers (Long)
35th
Arithmetic Numbers
24th
Collatz
121st
CSS Colors
149th
Divisors
1st
Emirp Numbers
120th
Evil Numbers
1st
Evil Numbers (Long)
43rd
Factorial Factorisation
62nd
Fibonacci
1st
Fizz Buzz
68th
Happy Numbers
74th
Kolakoski Sequence
84th
Leap Years
18th
ln 2
1st
Look and Say
109th
Lucky Numbers
72nd
Niven Numbers
53rd
Niven Numbers (Long)
104th
Odious Numbers
1st
Odious Numbers (Long)
91st
Ordinal Numbers
81st
Pangram Grep
46th
Pascal’s Triangle
89th
Pernicious Numbers
81st
Prime Numbers
93rd
Quine
1st
Recamán
81st
Rock-paper-scissors-Spock-lizard
82nd
Roman to Arabic
114th
ROT13
96th
Sierpiński Triangle
42nd
Tic-tac-toe
77th
π
111th
τ
102nd
√2
1st
𝑒
1st