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A320370 Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
64, 8192, 569608, 37398884, 2486026176, 165355751224, 10993944343316, 731023916987668, 48608312646628816, 3232138361835207448, 214916439617787409844, 14290565387888543489420, 950231025365163583436224 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A320371.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A320371.

Sequence in context: A208714 A316959 A316814 * A298969 A317564 A299739

Adjacent sequences:  A320367 A320368 A320369 * A320371 A320372 A320373

KEYWORD

nonn

AUTHOR

R. H. Hardin, Oct 11 2018

STATUS

approved

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Last modified September 30 03:19 EDT 2020. Contains 337432 sequences. (Running on oeis4.)