Abundant Numbers
27th
Abundant Numbers (Long)
23rd
Arithmetic Numbers
13th
ASCII Table
29th
Catalan Numbers
14th
Collatz
21st
Divisors
48th
Emojify
16th
Evil Numbers
35th
Fibonacci
54th
Fizz Buzz
141st
Happy Numbers
30th
ISBN
17th
Leap Years
62nd358th53rd
Look and Say
6th
Niven Numbers
40th
Niven Numbers (Long)
43rd
15th
Odious Numbers
38th
Odious Numbers (Long)
21st
Prime Numbers
51st
Quine
100th
Rijndael S-box
11th
Rock-paper-scissors-Spock-lizard
7th
Tongue-twisters
7th
Vampire Numbers
10th
γ
8th
π
45th
25th
φ
22nd