Abundant Numbers
51st
Abundant Numbers (Long)
28th
Collatz
129th
CSS Colors
136th
Divisors
1st
Emirp Numbers
99th
Evil Numbers
121st
Evil Numbers (Long)
33rd
Fibonacci
1st
Fizz Buzz
54th
Happy Numbers
51st
Kolakoski Sequence
119th
Leap Years
13th
ln 2
54th
Look and Say
83rd
Lucky Numbers
61st
Niven Numbers
35th
Niven Numbers (Long)
84th
Odious Numbers
85th
Odious Numbers (Long)
70th
Ordinal Numbers
65th
Pangram Grep
36th
Pascal’s Triangle
75th
Pernicious Numbers
67th
Prime Numbers
72nd
Quine
1st
Recamán
67th
Rock-paper-scissors-Spock-lizard
69th
Roman to Arabic
97th
ROT13
76th
Sierpiński Triangle
34th
Tic-tac-toe
56th
π
90th
τ
86th
√2
1st
𝑒
1st