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A317005 Number of nXn 0..1 arrays with every element unequal to 0, 1, 2, 3, 5, 6 or 8 king-move adjacent elements, with upper left element zero. 0
1, 8, 96, 2567, 147281, 19006132, 5395769696, 3348077796513, 4557407875546295 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A317011.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A317011.

Sequence in context: A337597 A052127 A300474 * A002506 A318012 A320398

Adjacent sequences:  A317002 A317003 A317004 * A317006 A317007 A317008

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 18 2018

STATUS

approved

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Last modified September 19 18:37 EDT 2020. Contains 337181 sequences. (Running on oeis4.)