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A316998 Number of nXn 0..1 arrays with every element unequal to 0, 1, 2, 3, 4, 6 or 8 king-move adjacent elements, with upper left element zero. 0
1, 8, 162, 7665, 854383, 223714229, 140997597309, 211618250694112, 754017146499756182 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A317004.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A317004.

Sequence in context: A183813 A222274 A061711 * A075387 A143857 A025606

Adjacent sequences:  A316995 A316996 A316997 * A316999 A317000 A317001

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 18 2018

STATUS

approved

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Last modified May 19 23:16 EDT 2019. Contains 323411 sequences. (Running on oeis4.)