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A305451 Number of nX7 0..1 arrays with every element unequal to 1, 2, 4, 5 or 8 king-move adjacent elements, with upper left element zero. 1
8, 306, 181, 1234, 13128, 30344, 222961, 1378090, 6504099, 42968149, 261181596, 1636206887, 10969528353, 72669507665, 509281282451, 3588484790301, 25356097139660, 185710427631939, 1352839119877860, 9884676812622517 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A305452.

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

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

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

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

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

CROSSREFS

Cf. A305452.

Sequence in context: A326013 A222792 A304057 * A304703 A316454 A305014

Adjacent sequences:  A305448 A305449 A305450 * A305452 A305453 A305454

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jun 01 2018

STATUS

approved

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Last modified October 3 04:21 EDT 2022. Contains 357230 sequences. (Running on oeis4.)