12 Days of Christmas
279th
Abundant Numbers
42nd
Abundant Numbers (Long)
8th
Catalan Numbers
93rd
Christmas Trees
208th
Collatz
152nd
CSS Colors
88th
Cubes
164th
Divisors
1st
Emirp Numbers
91st
Emirp Numbers (Long)
50th
Evil Numbers
1st
Evil Numbers (Long)
41st
Fibonacci
194th
Fizz Buzz
62nd
Foo Fizz Buzz Bar
1st
Fractions
105th
Game of Life
77th
Happy Numbers
195th
Happy Numbers (Long)
109th
Inventory Sequence
89th
Kolakoski Sequence
20th
Leap Years
152nd
Leyland Numbers
8th
Look and Say
99th
Lucky Numbers
85th
Niven Numbers
87th
Niven Numbers (Long)
49th
Odious Numbers
1st
Odious Numbers (Long)
1st
Ordinal Numbers
182nd
Pangram Grep
1st
Pascal’s Triangle
1st
Pernicious Numbers
97th
Pernicious Numbers (Long)
74th
Prime Numbers
1st
Prime Numbers (Long)
1st
Quine
80th
Recamán
100th
Reverse Polish Notation
27th
Smith Numbers
48th
Tongue-twisters
175th
United States
83rd
Vampire Numbers
33rd
Van Eck Sequence
82nd
π
206th
τ
162nd
φ
142nd
√2
1st
𝑒
1st42nd