Abundant Numbers
56th
Abundant Numbers (Long)
33rd
Arithmetic Numbers
24th
Collatz
114th
CSS Colors
143rd
Divisors
1st
Emirp Numbers
116th
Evil Numbers
1st
Evil Numbers (Long)
41st
Factorial Factorisation
53rd
Fibonacci
1st
Fizz Buzz
59th
Happy Numbers
66th
Kolakoski Sequence
78th
Leap Years
16th
ln 2
1st
Look and Say
99th
Lucky Numbers
65th
Niven Numbers
44th
Niven Numbers (Long)
98th
Odious Numbers
1st
Odious Numbers (Long)
83rd
Ordinal Numbers
73rd
Pangram Grep
45th
Pascal’s Triangle
82nd
Pernicious Numbers
77th
Prime Numbers
85th
Quine
1st
Recamán
77th
Rock-paper-scissors-Spock-lizard
76th
Roman to Arabic
110th
ROT13
91st
Sierpiński Triangle
38th
Tic-tac-toe
69th
π
103rd
τ
95th
√2
1st
𝑒
1st