Abundant Numbers
63rd
Abundant Numbers (Long)
35th
Arithmetic Numbers
24th
Collatz
120th
CSS Colors
149th
Divisors
1st
Emirp Numbers
119th
Evil Numbers
1st
Evil Numbers (Long)
43rd
Factorial Factorisation
60th
Fibonacci
1st
Fizz Buzz
66th
Happy Numbers
72nd
Kolakoski Sequence
82nd
Leap Years
18th
ln 2
1st
Look and Say
106th
Lucky Numbers
72nd
Niven Numbers
51st
Niven Numbers (Long)
103rd
Odious Numbers
1st
Odious Numbers (Long)
90th
Ordinal Numbers
79th
Pangram Grep
46th
Pascal’s Triangle
89th
Pernicious Numbers
80th
Prime Numbers
93rd
Quine
1st
Recamán
80th
Rock-paper-scissors-Spock-lizard
81st
Roman to Arabic
113th
ROT13
95th
Sierpiński Triangle
42nd
Tic-tac-toe
75th
π
110th
τ
101st
√2
1st
𝑒
1st