12 Days of Christmas
234th
Abundant Numbers
36th
Abundant Numbers (Long)
4th
Catalan Numbers
72nd
Christmas Trees
168th
Collatz
117th
CSS Colors
71st
Cubes
145th
Divisors
1st
Emirp Numbers
74th
Emirp Numbers (Long)
36th
Evil Numbers
1st
Evil Numbers (Long)
32nd
Fibonacci
157th
Fizz Buzz
53rd
Foo Fizz Buzz Bar
1st
Fractions
76th
Game of Life
58th
Happy Numbers
163rd
Happy Numbers (Long)
88th
Inventory Sequence
64th
Kolakoski Sequence
18th
Leap Years
125th
Leyland Numbers
6th
Look and Say
73rd
Lucky Numbers
69th
Niven Numbers
60th
Niven Numbers (Long)
34th
Odious Numbers
1st
Odious Numbers (Long)
1st
Ordinal Numbers
158th
Pangram Grep
1st
Pascal’s Triangle
1st
Pernicious Numbers
79th
Pernicious Numbers (Long)
45th
Prime Numbers
1st
Prime Numbers (Long)
1st
Quine
58th
Recamán
83rd
Reverse Polish Notation
23rd
Smith Numbers
35th
Tongue-twisters
147th
United States
69th
Vampire Numbers
29th
Van Eck Sequence
57th
π
171st
τ
136th
φ
114th
√2
1st
𝑒
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