A283231 - OEIS

A283231

Number of nX7 0..1 arrays with no 1 equal to more than two of its horizontal and vertical neighbors, with the exception of exactly two elements.

0, 1376, 338397, 47531178, 5735340380, 628267302565, 64590243667344, 6347644826932771, 603124906010664854, 55820729585827738580, 5058732535887213720189, 450601583645724092513122

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OFFSET

1,2

COMMENTS

Column 7 of A283232.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=2

..1..1..1..1..1..1..1. .1..1..1..1..1..0..1. .1..1..0..1..0..0..0

..0..0..0..1..0..1..0. .0..1..1..0..0..1..0. .1..1..1..1..1..1..1

CROSSREFS

Cf. A283232.

Sequence in context: A056087 A122692 A076760 * A283790 A345515 A345768

Adjacent sequences: A283228 A283229 A283230 * A283232 A283233 A283234

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 03 2017

STATUS

approved