12 Days of Christmas
32nd
99 Bottles of Beer
33rd
Abundant Numbers
40th
Arabic to Roman
21st
15th
brainfuck
78th
Christmas Trees
53rd
CSS Colors
18th
Cubes
40th
Diamonds
46th
Divisors
87th
Emirp Numbers
28th
Evil Numbers
111th
Fibonacci
129th
Fizz Buzz
273rd
Fractions
60th
Happy Numbers
65th
Happy Numbers (Long)
46th
Kolakoski Constant
20th
Kolakoski Sequence
46th
Leap Years
62nd
Leyland Numbers
26th
Look and Say
27th
Niven Numbers
33rd
Odious Numbers
90th
Ordinal Numbers
58th
Pascal’s Triangle
77th
Pernicious Numbers
89th
Prime Numbers
51st
84th
Quine
1st
16th
1st
23rd
53rd
57th
23rd
44th
21st
31st
15th
27th
10th
22nd
1st
247th
1st
1st
1st
16th
21st
1st
38th
45th
52nd
11th
69th
1st
27th
43rd
30th
11th
Recamán
50th
Sierpiński Triangle
57th
Smith Numbers
34th
Tongue-twisters
55th
United States
24th
Vampire Numbers
32nd
Van Eck Sequence
48th
λ
35th
π
52nd
τ
26th
φ
24th
√2
27th
𝑒
41st