12 Days of Christmas
250th
Abundant Numbers
37th
Abundant Numbers (Long)
5th
Catalan Numbers
77th
Christmas Trees
177th
Collatz
131st
CSS Colors
78th
Cubes
151st
Divisors
1st
Emirp Numbers
76th
Emirp Numbers (Long)
38th
Evil Numbers
1st
Evil Numbers (Long)
33rd
Fibonacci
173rd
Fizz Buzz
54th
Foo Fizz Buzz Bar
1st
Fractions
83rd
Game of Life
65th
Happy Numbers
175th
Happy Numbers (Long)
94th
Inventory Sequence
75th
Kolakoski Sequence
19th
Leap Years
133rd
Leyland Numbers
7th
Look and Say
78th
Lucky Numbers
71st
Niven Numbers
67th
Niven Numbers (Long)
37th
Odious Numbers
1st
Odious Numbers (Long)
1st
Ordinal Numbers
166th
Pangram Grep
1st
Pascal’s Triangle
1st
Pernicious Numbers
84th
Pernicious Numbers (Long)
53rd
Prime Numbers
1st
Prime Numbers (Long)
1st
Quine
65th
Recamán
86th
Reverse Polish Notation
27th
Smith Numbers
37th
Tongue-twisters
154th
United States
74th
Vampire Numbers
30th
Van Eck Sequence
62nd
π
185th
τ
148th
φ
127th
√2
1st
𝑒
1st34th