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A303689 Number of nX7 0..1 arrays with every element unequal to 2, 3 or 4 king-move adjacent elements, with upper left element zero. 1
0, 702, 191, 5563, 4619, 55382, 99205, 713542, 1964803, 10454428, 36456925, 170495722, 667372121, 2966797695, 12357633485, 53847703784, 232236213151, 1006212092360, 4425027446469, 19184005184192, 85271913119853 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 7 of A303690.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A303690.

Sequence in context: A031423 A140433 A316969 * A252567 A252574 A252575

Adjacent sequences:  A303686 A303687 A303688 * A303690 A303691 A303692

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 28 2018

STATUS

approved

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Last modified November 29 14:50 EST 2021. Contains 349416 sequences. (Running on oeis4.)