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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.

A208198 Number of nX5 0..3 arrays with new values 0..3 introduced in row major order and no element equal to more than two of its immediate leftward or upward or left-upward diagonal neighbors.

Table of values

n a(n)
1 51
2 41272
3 39725054
4 38372808893
5 37069738362057
6 35810971705853725
7 34594950233928279876
8 33420220819293699707599
9 32285381308444124871905667
10 31189077171790298063795540459
11 30129999876244591484571731949842

List of values

[51, 41272, 39725054, 38372808893, 37069738362057, 35810971705853725, 34594950233928279876, 33420220819293699707599, 32285381308444124871905667, 31189077171790298063795540459, 30129999876244591484571731949842]

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

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