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A283725 Number of nX7 0..1 arrays with no 1 equal to more than two of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly one element. 1
0, 4220, 369328, 25260000, 1590274565, 94357463834, 5410290101514, 302490564406270, 16600142770401845, 897968848303855396, 48020384269733267214, 2544060241155707255130, 133737173204786854881261 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 7 of A283726.

LINKS

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

EXAMPLE

Some solutions for n=2

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

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

CROSSREFS

Cf. A283726.

Sequence in context: A250947 A291136 A067140 * A109488 A245316 A046335

Adjacent sequences: A283722 A283723 A283724 * A283726 A283727 A283728

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 15 2017

STATUS

approved

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Last modified December 3 08:18 EST 2022. Contains 358515 sequences. (Running on oeis4.)