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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.

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A302375 Number of n X n 0..1 arrays with every element equal to 1, 2, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Original entry on oeis.org

0, 3, 76, 4640, 1089035, 849467774, 2195619257236, 18920034863521166, 543629426918828295527
Offset: 1

Views

Author

R. H. Hardin, Apr 06 2018

Keywords

Comments

Diagonal of A302381.

Examples

			Some solutions for n=5
..0..0..0..0..0. .0..0..0..1..0. .0..0..0..0..0. .0..0..0..1..0
..0..1..0..0..1. .0..0..0..0..1. .0..0..1..1..0. .0..1..1..0..1
..0..0..1..1..1. .1..0..1..1..0. .1..0..0..0..0. .0..0..0..0..0
..1..0..0..0..1. .1..1..0..0..0. .0..1..1..0..0. .1..1..0..1..0
..0..1..0..0..0. .0..0..1..1..1. .1..0..1..1..1. .1..1..1..1..1

Crossrefs

Cf. A302381.
Previous Showing 11-11 of 11 results.

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