12 Days of Christmas
231st
Abundant Numbers
36th
Abundant Numbers (Long)
4th
Catalan Numbers
70th
Christmas Trees
166th
Collatz
115th
CSS Colors
70th
Cubes
144th
Divisors
1st
Emirp Numbers
71st
Emirp Numbers (Long)
35th
Evil Numbers
1st
Evil Numbers (Long)
32nd
Fibonacci
157th
Fizz Buzz
53rd
Foo Fizz Buzz Bar
1st
Fractions
76th
Game of Life
57th
Happy Numbers
162nd
Happy Numbers (Long)
88th
Inventory Sequence
63rd
Kolakoski Sequence
18th
Leap Years
121st
Leyland Numbers
6th
Look and Say
71st
Lucky Numbers
68th
Niven Numbers
58th
Niven Numbers (Long)
34th
Odious Numbers
1st
Odious Numbers (Long)
1st
Ordinal Numbers
157th
Pangram Grep
1st
Pascal’s Triangle
1st
Pernicious Numbers
77th
Pernicious Numbers (Long)
45th
Prime Numbers
1st
Prime Numbers (Long)
1st
Quine
57th
Recamán
80th
Reverse Polish Notation
23rd
Smith Numbers
35th
Tongue-twisters
145th
United States
69th
Vampire Numbers
29th
Van Eck Sequence
55th
π
170th
τ
135th
φ
114th
√2
1st
𝑒
1st31st