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A316816 Number of nXn 0..1 arrays with every element unequal to 0, 1, 2, 3, 4, 6 or 7 king-move adjacent elements, with upper left element zero. 0
1, 8, 169, 9233, 1363249, 513913591, 521608116975, 1411340174061312, 10029910669507256358 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A316822.

LINKS

Table of n, a(n) for n=1..9.

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

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

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

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

CROSSREFS

Cf. A316822.

Sequence in context: A264113 A181198 A302802 * A001534 A096486 A303463

Adjacent sequences:  A316813 A316814 A316815 * A316817 A316818 A316819

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 14 2018

STATUS

approved

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Last modified January 24 18:36 EST 2022. Contains 350565 sequences. (Running on oeis4.)