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A302321 Number of nX7 0..1 arrays with every element equal to 0, 1, 2 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1
64, 960, 4509, 55727, 529381, 4521584, 45861206, 444688101, 4176914829, 40809262060, 395654711075, 3811906778065, 37003644433919, 358647770159776, 3475163995822613, 33712933618938830, 326851938344178738 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A302322.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A302322.

Sequence in context: A027003 A265620 A253133 * A303015 A302819 A303512

Adjacent sequences:  A302318 A302319 A302320 * A302322 A302323 A302324

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 05 2018

STATUS

approved

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Last modified October 27 14:36 EDT 2021. Contains 348280 sequences. (Running on oeis4.)