12 Days of Christmas
77th
99 Bottles of Beer
144th
Abundant Numbers
50th
Arrows
72nd
Christmas Trees
69th
Divisors
87th
122nd
Emirp Numbers
58th
Evil Numbers
64th
7th
13th
381st
Fibonacci
314th
Fizz Buzz
1st
Foo Fizz Buzz Bar
78th
Happy Numbers
104th
Kolakoski Sequence
66th
Leap Years
203rd
Leyland Numbers
44th
Look and Say
82nd
Niven Numbers
136th
Odious Numbers
55th
7th
11th
379th
Pangram Grep
10th
Pascal’s Triangle
76th
Pernicious Numbers
108th
Prime Numbers
86th
Prime Numbers (Long)
45th
Quine
114th
25th
Recamán
61st
Sierpiński Triangle
84th
Tongue-twisters
37th
λ
57th
𝑒
35th
76th
26th