Abundant Numbers
43rd
Divisors
53rd
Emirp Numbers
43rd
Evil Numbers
66th
Fibonacci
179th
Fizz Buzz
239th
Happy Numbers
89th
Leap Years
68th
Lucky Tickets
12th
Morse Decoder
13th
Morse Encoder
13th
Niven Numbers
53rd
Odious Numbers
63rd
Ordinal Numbers
26th
Pangram Grep
35th
Pascal’s Triangle
36th
Pernicious Numbers
53rd
Poker
11th
Prime Numbers
83rd
Rock-paper-scissors-Spock-lizard
15th
Rule 110
16th
Seven Segment
21st
Sierpiński Triangle
34th
Spelling Numbers
12th
Sudoku
10th
π
23rd
τ
17th
φ
26th
√2
30th
𝑒
19th