12 Days of Christmas
123rd
99 Bottles of Beer
189th
Abundant Numbers
58th
Arrows
83rd
Christmas Trees
83rd
Divisors
100th139th
Emirp Numbers
72nd
Evil Numbers
76th14th14th
484th
Fibonacci
365th
Fizz Buzz
1st
Foo Fizz Buzz Bar
108th
Happy Numbers
130th
Kolakoski Sequence
77th
Leap Years
243rd
Leyland Numbers
52nd
Look and Say
103rd
Niven Numbers
162nd
Odious Numbers
67th14th11th
479th
Pangram Grep
11th
Pascal’s Triangle
93rd
Pernicious Numbers
124th
Prime Numbers
105th
Prime Numbers (Long)
60th
Quine
133rd
30th
Recamán
74th
Sierpiński Triangle
100th
Tongue-twisters
77th
λ
85th
𝑒
42nd
103rd38th