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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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A302735 Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Original entry on oeis.org

1, 8, 228, 21625, 6947036, 7530280825, 27552364197684, 340198731046937302, 14168448763536007733003
Offset: 1

Views

Author

R. H. Hardin, Apr 12 2018

Keywords

Comments

Diagonal of A302741.

Examples

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

Crossrefs

Cf. A302741.
Previous Showing 11-11 of 11 results.

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