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A316421 Number of nXn 0..1 arrays with every element unequal to 0, 1, 3, 5, 6 or 8 king-move adjacent elements, with upper left element zero. 0
1, 5, 14, 97, 1097, 8916, 130402, 3242010, 86620644, 3376983746, 210700614386 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A316427.

LINKS

Table of n, a(n) for n=1..11.

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A316427.

Sequence in context: A334547 A348777 A024167 * A317424 A077262 A184439

Adjacent sequences:  A316418 A316419 A316420 * A316422 A316423 A316424

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 02 2018

STATUS

approved

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Last modified December 5 12:24 EST 2021. Contains 349557 sequences. (Running on oeis4.)