Abundant Numbers
56th
Abundant Numbers (Long)
33rd
Arithmetic Numbers
24th
Collatz
111th
CSS Colors
142nd
Divisors
1st
Emirp Numbers
113th
Evil Numbers
1st
Evil Numbers (Long)
40th
Factorial Factorisation
51st
Fibonacci
1st
Fizz Buzz
58th
Happy Numbers
64th
Kolakoski Sequence
77th
Leap Years
15th
ln 2
1st
Look and Say
99th
Lucky Numbers
63rd
Niven Numbers
41st
Niven Numbers (Long)
98th
Odious Numbers
1st
Odious Numbers (Long)
81st
Ordinal Numbers
70th
Pangram Grep
43rd
Pascal’s Triangle
79th
Pernicious Numbers
77th
Prime Numbers
83rd
Quine
1st
Recamán
76th
Rock-paper-scissors-Spock-lizard
74th
Roman to Arabic
108th
ROT13
89th
Sierpiński Triangle
38th
Tic-tac-toe
67th
π
102nd
τ
95th
√2
1st
𝑒
1st