12 Days of Christmas
253rd
Abundant Numbers
39th
Abundant Numbers (Long)
5th
Catalan Numbers
81st
Christmas Trees
179th
Collatz
135th
CSS Colors
80th
Cubes
153rd
Divisors
1st
Emirp Numbers
76th
Emirp Numbers (Long)
40th
Evil Numbers
1st
Evil Numbers (Long)
35th
Fibonacci
179th
Fizz Buzz
54th
Foo Fizz Buzz Bar
1st
Fractions
84th
Game of Life
66th
Happy Numbers
178th
Happy Numbers (Long)
95th
Inventory Sequence
74th
Kolakoski Sequence
19th
Leap Years
140th
Leyland Numbers
7th
Look and Say
84th
Lucky Numbers
73rd
Niven Numbers
69th
Niven Numbers (Long)
37th
Odious Numbers
1st
Odious Numbers (Long)
1st
Ordinal Numbers
170th
Pangram Grep
1st
Pascal’s Triangle
1st
Pernicious Numbers
89th
Pernicious Numbers (Long)
58th
Prime Numbers
1st
Prime Numbers (Long)
1st
Quine
70th
Recamán
88th
Reverse Polish Notation
27th
Smith Numbers
37th
Tongue-twisters
162nd
United States
75th
Vampire Numbers
32nd
Van Eck Sequence
66th
π
187th
τ
150th
φ
130th
√2
1st
𝑒
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