12 Days of Christmas
260th
Abundant Numbers
40th
Abundant Numbers (Long)
8th
Catalan Numbers
84th
Christmas Trees
186th
Collatz
141st
CSS Colors
81st
Cubes
157th
Divisors
1st
Emirp Numbers
84th
Emirp Numbers (Long)
42nd
Evil Numbers
1st
Evil Numbers (Long)
38th
Fibonacci
185th
Fizz Buzz
58th
Foo Fizz Buzz Bar
1st
Fractions
91st
Game of Life
69th
Happy Numbers
184th
Happy Numbers (Long)
103rd
Inventory Sequence
79th
Kolakoski Sequence
19th
Leap Years
144th
Leyland Numbers
8th
Look and Say
85th
Lucky Numbers
74th
Niven Numbers
74th
Niven Numbers (Long)
41st
Odious Numbers
1st
Odious Numbers (Long)
1st
Ordinal Numbers
174th
Pangram Grep
1st
Pascal’s Triangle
1st
Pernicious Numbers
92nd
Pernicious Numbers (Long)
64th
Prime Numbers
1st
Prime Numbers (Long)
1st
Quine
72nd
Recamán
91st
Reverse Polish Notation
27th
Smith Numbers
40th
Tongue-twisters
165th
United States
76th
Vampire Numbers
32nd
Van Eck Sequence
73rd
π
193rd
τ
154th
φ
136th
√2
1st
𝑒
1st36th