12 Days of Christmas
270th
Abundant Numbers
41st
Abundant Numbers (Long)
8th
Catalan Numbers
88th
Christmas Trees
198th
Collatz
145th
CSS Colors
83rd
Cubes
159th
Divisors
1st
Emirp Numbers
89th
Emirp Numbers (Long)
45th
Evil Numbers
1st
Evil Numbers (Long)
41st
Fibonacci
189th
Fizz Buzz
59th
Foo Fizz Buzz Bar
1st
Fractions
97th
Game of Life
73rd
Happy Numbers
189th
Happy Numbers (Long)
106th
Inventory Sequence
85th
Kolakoski Sequence
19th
Leap Years
146th
Leyland Numbers
8th
Look and Say
93rd
Lucky Numbers
78th
Niven Numbers
80th
Niven Numbers (Long)
42nd
Odious Numbers
1st
Odious Numbers (Long)
1st
Ordinal Numbers
177th
Pangram Grep
1st
Pascal’s Triangle
1st
Pernicious Numbers
95th
Pernicious Numbers (Long)
70th
Prime Numbers
1st
Prime Numbers (Long)
1st
Quine
75th
Recamán
98th
Reverse Polish Notation
27th
Smith Numbers
44th
Tongue-twisters
171st
United States
81st
Vampire Numbers
32nd
Van Eck Sequence
76th
π
200th
τ
157th
φ
138th
√2
1st
𝑒
1st40th