12 Days of Christmas
76th
99 Bottles of Beer
83rd
Abundant Numbers
65th
Christmas Trees
40th
Cubes
16th
Diamonds
36th
Divisors
75th
Emirp Numbers
30th
Evil Numbers
64th
Fibonacci
58th
Fizz Buzz
118th
Happy Numbers
33rd
Leap Years
99th
Morse Decoder
14th
Morse Encoder
14th
Niven Numbers
78th
Odious Numbers
65th
Ordinal Numbers
34th
Pangram Grep
47th
Pascal’s Triangle
32nd
Pernicious Numbers
56th
Prime Numbers
82nd
Rule 110
30th
Seven Segment
15th
Sierpiński Triangle
38th
United States
λ
16th
π
36th
τ
20th
φ
23rd
√2
23rd
𝑒
24th