12 Days of Christmas
246th
Abundant Numbers
37th
Abundant Numbers (Long)
4th
Catalan Numbers
76th
Christmas Trees
174th
Collatz
125th
CSS Colors
76th
Cubes
148th
Divisors
1st
Emirp Numbers
76th
Emirp Numbers (Long)
38th
Evil Numbers
1st
Evil Numbers (Long)
33rd
Fibonacci
165th
Fizz Buzz
54th
Foo Fizz Buzz Bar
1st
Fractions
81st
Game of Life
62nd
Happy Numbers
173rd
Happy Numbers (Long)
91st
Inventory Sequence
70th
Kolakoski Sequence
19th
Leap Years
131st
Leyland Numbers
7th
Look and Say
78th
Lucky Numbers
70th
Niven Numbers
65th
Niven Numbers (Long)
37th
Odious Numbers
1st
Odious Numbers (Long)
1st
Ordinal Numbers
165th
Pangram Grep
1st
Pascal’s Triangle
1st
Pernicious Numbers
83rd
Pernicious Numbers (Long)
52nd
Prime Numbers
1st
Prime Numbers (Long)
1st
Quine
63rd
Recamán
86th
Reverse Polish Notation
26th
Smith Numbers
36th
Tongue-twisters
153rd
United States
71st
Vampire Numbers
30th
Van Eck Sequence
61st
π
182nd
τ
144th
φ
124th
√2
1st
𝑒
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