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A317154 Number of nXn 0..1 arrays with every element unequal to 0, 1, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero. 0
1, 5, 14, 105, 2345, 69701, 20168266, 13792577708, 18922956181705 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A317160.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A317160.

Sequence in context: A077262 A184439 A316233 * A283785 A267351 A058072

Adjacent sequences:  A317151 A317152 A317153 * A317155 A317156 A317157

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 22 2018

STATUS

approved

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Last modified September 20 08:53 EDT 2021. Contains 347579 sequences. (Running on oeis4.)