12 Days of Christmas
328th
Abundant Numbers
133rd
Abundant Numbers (Long)
75th
Catalan Numbers
86th
Christmas Trees
233rd
Collatz
195th
CSS Colors
64th
Cubes
177th
Divisors
118th
Emirp Numbers
15th
Emirp Numbers (Long)
80th
Evil Numbers
1st
Evil Numbers (Long)
40th
Fibonacci
187th
Fizz Buzz
212th
Foo Fizz Buzz Bar
133rd
Fractions
145th
Game of Life
85th
Happy Numbers
220th
Happy Numbers (Long)
129th
Inventory Sequence
93rd
Kolakoski Sequence
64th
Leap Years
147th
Leyland Numbers
86th
Look and Say
126th
Lucky Numbers
93rd
Niven Numbers
77th
Niven Numbers (Long)
60th
Odious Numbers
1st
Odious Numbers (Long)
1st
Ordinal Numbers
198th
Pangram Grep
92nd
Pascal’s Triangle
45th
Pernicious Numbers
95th
Pernicious Numbers (Long)
83rd
Prime Numbers
1st
Prime Numbers (Long)
1st
Quine
72nd
Recamán
132nd
Reverse Polish Notation
68th
Smith Numbers
74th
Tongue-twisters
208th
United States
90th
Vampire Numbers
71st
Van Eck Sequence
87th
π
220th
τ
168th
φ
165th
√2
1st
𝑒
1st40th