12 Days of Christmas
127th
99 Bottles of Beer
198th
Abundant Numbers
61st
Arrows
91st
Christmas Trees
87th
Divisors
107th143rd
Emirp Numbers
74th
Evil Numbers
79th14th16th
521st
Fibonacci
388th
Fizz Buzz
1st
Foo Fizz Buzz Bar
119th
Happy Numbers
136th
Kolakoski Sequence
81st
Leap Years
264th
Leyland Numbers
55th
Look and Say
109th
Niven Numbers
172nd
Odious Numbers
71st14th11th
508th
Pangram Grep
14th
Pascal’s Triangle
100th
Pernicious Numbers
135th
Prime Numbers
113th
Prime Numbers (Long)
66th
Quine
141st
33rd
Recamán
77th
Sierpiński Triangle
107th
Tongue-twisters
79th
λ
91st
𝑒
48th
106th