Abundant Numbers
31st
Abundant Numbers (Long)
83rd
Collatz
179th
CSS Colors
97th
Divisors
1st
Emirp Numbers
12th
Evil Numbers
121st
Evil Numbers (Long)
33rd
Fibonacci
1st
Fizz Buzz
38th
Happy Numbers
42nd
Kolakoski Sequence
50th
Leap Years
13th
ln 2
59th
Look and Say
36th
Lucky Numbers
64th
Niven Numbers
35th
Niven Numbers (Long)
98th
Odious Numbers
85th
Odious Numbers (Long)
70th
Ordinal Numbers
3rd
Pangram Grep
22nd
Pascal’s Triangle
41st
Pernicious Numbers
67th
Prime Numbers
72nd
Quine
1st
Recamán
33rd
Rock-paper-scissors-Spock-lizard
29th
Roman to Arabic
46th
ROT13
94th
Sierpiński Triangle
21st
Tic-tac-toe
66th
π
98th
τ
91st
√2
1st
𝑒
1st