Abundant Numbers
68th
Abundant Numbers (Long)
36th
Arithmetic Numbers
27th
Collatz
129th
CSS Colors
155th
Divisors
1st
Emirp Numbers
127th
Evil Numbers
1st
Evil Numbers (Long)
47th
Factorial Factorisation
66th
Fibonacci
1st
Fizz Buzz
83rd
Happy Numbers
79th
Kolakoski Sequence
86th
Leap Years
18th
ln 2
1st
Look and Say
116th
Lucky Numbers
78th
Niven Numbers
54th
Niven Numbers (Long)
108th
Odious Numbers
1st
Odious Numbers (Long)
99th
Ordinal Numbers
86th
Pangram Grep
51st
Pascal’s Triangle
92nd
Pernicious Numbers
86th
Prime Numbers
101st
Quine
1st
Recamán
86th
Rock-paper-scissors-Spock-lizard
88th
Roman to Arabic
117th
ROT13
101st
Sierpiński Triangle
46th
Tic-tac-toe
84th
π
118th
τ
108th
√2
1st
𝑒
1st