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A317511 Number of n X n 0..1 arrays with every element unequal to 0, 1, 2, 3, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero. 1
1, 8, 255, 32256, 16198017, 32289056648, 255495837970145, 8025093993437265376, 1000586105494959749616796, 495218382735595839495210771842, 972919685981025490418238840100646750 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A317517.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..14

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

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

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

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

CROSSREFS

Cf. A317517.

Sequence in context: A053717 A267250 A034674 * A300176 A291850 A130034

Adjacent sequences:  A317508 A317509 A317510 * A317512 A317513 A317514

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 30 2018

STATUS

approved

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Last modified May 6 16:30 EDT 2021. Contains 343586 sequences. (Running on oeis4.)