12 Days of Christmas
261st
Abundant Numbers
109th
Abundant Numbers (Long)
55th
Catalan Numbers
67th
Christmas Trees
192nd
Collatz
147th
CSS Colors
49th
Cubes
152nd
Divisors
95th
Emirp Numbers
10th
Emirp Numbers (Long)
60th
Evil Numbers
1st
Evil Numbers (Long)
31st
Fibonacci
146th
Fizz Buzz
171st
Foo Fizz Buzz Bar
100th
Fractions
109th
Game of Life
64th
Happy Numbers
182nd
Happy Numbers (Long)
102nd
Inventory Sequence
64th
Kolakoski Sequence
50th
Leap Years
115th
Leyland Numbers
70th
Look and Say
96th
Lucky Numbers
75th
Niven Numbers
56th
Niven Numbers (Long)
44th
Odious Numbers
1st
Odious Numbers (Long)
1st
Ordinal Numbers
165th
Pangram Grep
72nd
Pascal’s Triangle
33rd
Pernicious Numbers
72nd
Pernicious Numbers (Long)
53rd
Prime Numbers
1st
Prime Numbers (Long)
1st
Quine
55th
Recamán
104th
Reverse Polish Notation
55th
Smith Numbers
57th
Tongue-twisters
171st
United States
72nd
Vampire Numbers
56th
Van Eck Sequence
62nd
π
174th
τ
133rd
φ
134th
√2
1st
𝑒
1st
23rd