12 Days of Christmas
307th
Abundant Numbers
125th
Abundant Numbers (Long)
67th
Catalan Numbers
77th
Christmas Trees
216th
Collatz
183rd
CSS Colors
62nd
Cubes
171st
Divisors
111th
Emirp Numbers
12th
Emirp Numbers (Long)
73rd
Evil Numbers
1st
Evil Numbers (Long)
33rd
Fibonacci
174th
Fizz Buzz
202nd
Foo Fizz Buzz Bar
123rd
Fractions
135th
Game of Life
78th
Happy Numbers
209th
Happy Numbers (Long)
118th
Inventory Sequence
82nd
Kolakoski Sequence
61st
Leap Years
135th
Leyland Numbers
83rd
Look and Say
112th
Lucky Numbers
89th
Niven Numbers
67th
Niven Numbers (Long)
54th
Odious Numbers
1st
Odious Numbers (Long)
1st
Ordinal Numbers
188th
Pangram Grep
85th
Pascal’s Triangle
41st
Pernicious Numbers
84th
Pernicious Numbers (Long)
68th
Prime Numbers
1st
Prime Numbers (Long)
1st
Quine
67th
Recamán
121st
Reverse Polish Notation
66th
Smith Numbers
67th
Tongue-twisters
194th
United States
86th
Vampire Numbers
65th
Van Eck Sequence
73rd
π
206th
τ
161st
φ
158th
√2
1st
𝑒
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