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A302386 Number of 7Xn 0..1 arrays with every element equal to 1, 2, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1
0, 1172, 97160, 5421003, 404225195, 29810775827, 2195619257236, 161767569162389, 11926561967149057, 879261959837334277, 64822173992483793756, 4778918571861830147396, 352319630303338775663571 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 7 of A302381.

LINKS

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

EXAMPLE

Some solutions for n=5

..0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0

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

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

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

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

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

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

CROSSREFS

Cf. A302381.

Sequence in context: A302477 A303258 A230738 * A303107 A302958 A232082

Adjacent sequences:  A302383 A302384 A302385 * A302387 A302388 A302389

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 06 2018

STATUS

approved

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Last modified July 28 17:15 EDT 2021. Contains 346335 sequences. (Running on oeis4.)