Abundant Numbers
69th
Abundant Numbers (Long)
37th
Arithmetic Numbers
23rd
Collatz
129th
CSS Colors
157th
Divisors
25th
Emirp Numbers
129th
Evil Numbers
1st
Evil Numbers (Long)
49th
Factorial Factorisation
69th
Fibonacci
1st
Fizz Buzz
85th
Happy Numbers
80th
Kolakoski Sequence
88th
Leap Years
22nd
ln 2
1st
Look and Say
120th
Lucky Numbers
79th
Niven Numbers
55th
Niven Numbers (Long)
110th
Odious Numbers
1st
Odious Numbers (Long)
102nd
Ordinal Numbers
86th
Pangram Grep
53rd
Pascal’s Triangle
95th
Pernicious Numbers
89th
Prime Numbers
103rd
Quine
1st
Recamán
87th
Rock-paper-scissors-Spock-lizard
89th
Roman to Arabic
118th
ROT13
105th
Sierpiński Triangle
47th
Tic-tac-toe
85th
π
123rd
τ
111th
√2
1st
𝑒
1st