12 Days of Christmas
243rd
Abundant Numbers
36th
Abundant Numbers (Long)
4th
Catalan Numbers
76th
Christmas Trees
173rd
Collatz
122nd
CSS Colors
76th
Cubes
148th
Divisors
1st
Emirp Numbers
76th
Emirp Numbers (Long)
38th
Evil Numbers
1st
Evil Numbers (Long)
33rd
Fibonacci
162nd
Fizz Buzz
54th
Foo Fizz Buzz Bar
1st
Fractions
80th
Game of Life
61st
Happy Numbers
172nd
Happy Numbers (Long)
91st
Inventory Sequence
69th
Kolakoski Sequence
19th
Leap Years
130th
Leyland Numbers
7th
Look and Say
78th
Lucky Numbers
70th
Niven Numbers
63rd
Niven Numbers (Long)
37th
Odious Numbers
1st
Odious Numbers (Long)
1st
Ordinal Numbers
165th
Pangram Grep
1st
Pascal’s Triangle
1st
Pernicious Numbers
82nd
Pernicious Numbers (Long)
50th
Prime Numbers
1st
Prime Numbers (Long)
1st
Quine
63rd
Recamán
86th
Reverse Polish Notation
26th
Smith Numbers
36th
Tongue-twisters
152nd
United States
71st
Vampire Numbers
30th
Van Eck Sequence
60th
π
179th
τ
143rd
φ
124th
√2
1st
𝑒
1st32nd