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A283732 Number of 7Xn 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, 3668, 478164, 28103560, 1712274593, 99246546144, 5410290101514, 290532256300862, 15323786418541986, 795029724871568274, 40818159546168252400, 2076399050875132311982, 104791804975655773251687 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 7 of A283726.

LINKS

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

EXAMPLE

Some solutions for n=2

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

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

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

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

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

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

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

CROSSREFS

Cf. A283726.

Sequence in context: A307937 A190923 A255088 * A283202 A205821 A250895

Adjacent sequences:  A283729 A283730 A283731 * A283733 A283734 A283735

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 15 2017

STATUS

approved

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Last modified May 24 18:53 EDT 2022. Contains 354043 sequences. (Running on oeis4.)