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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A300210 Number of n X 3 0..1 arrays with every element equal to 0, 1, 2, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

Table of values

n a(n)
1 4
2 32
3 228
4 1651
5 11965
6 86775
7 629440
8 4566023
9 33122989
10 240283124
11 1743081647
12 12644813016
13 91729105941
14 665429316237
15 4827215711786
16 35018011778092
17 254030734032018
18 1842812043966813
19 13368288852038965
20 96977414177346279

List of values

[4, 32, 228, 1651, 11965, 86775, 629440, 4566023, 33122989, 240283124, 1743081647, 12644813016, 91729105941, 665429316237, 4827215711786, 35018011778092, 254030734032018, 1842812043966813, 13368288852038965, 96977414177346279]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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