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A302217 Number of 7Xn 0..1 arrays with every element equal to 0, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1
64, 21, 1065, 172, 6423, 8756, 55922, 465040, 1136003, 19265064, 60547641, 699553699, 3796928584, 26139308319, 214325335931, 1151196050162, 10992872734396, 60033419186727, 538343914163895, 3376563558675197 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 7 of A302212.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..111

EXAMPLE

Some solutions for n=5

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

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

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

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

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

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

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

CROSSREFS

Cf. A302212.

Sequence in context: A305039 A305585 A316692 * A302465 A303247 A302373

Adjacent sequences:  A302214 A302215 A302216 * A302218 A302219 A302220

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 03 2018

STATUS

approved

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Last modified January 23 20:39 EST 2021. Contains 340386 sequences. (Running on oeis4.)