12 Days of Christmas
126th
99 Bottles of Beer
193rd
Abundant Numbers
59th
Arrows
89th
Christmas Trees
87th
Divisors
103rd142nd
Emirp Numbers
74th
Evil Numbers
80th14th15th
507th
Fibonacci
379th
Fizz Buzz
1st
Foo Fizz Buzz Bar
112th
Happy Numbers
132nd
Kolakoski Sequence
79th
Leap Years
249th
Leyland Numbers
55th
Look and Say
104th
Niven Numbers
167th
Odious Numbers
72nd14th11th
495th
Pangram Grep
11th
Pascal’s Triangle
95th
Pernicious Numbers
127th
Prime Numbers
108th
Prime Numbers (Long)
61st
Quine
137th
32nd
Recamán
75th
Sierpiński Triangle
105th
Tongue-twisters
78th
λ
88th
𝑒
44th
103rd