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A317566 Number of nXn 0..1 arrays with every element unequal to 0, 1, 2, 3, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero. 0
1, 8, 170, 9513, 1489357, 611929512, 703696012516, 2224035714999860, 19157046204651408615 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A317572.

LINKS

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

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

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

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

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

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

CROSSREFS

Cf. A317572.

Sequence in context: A096486 A303463 A300805 * A301444 A333036 A247729

Adjacent sequences:  A317563 A317564 A317565 * A317567 A317568 A317569

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 31 2018

STATUS

approved

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Last modified May 23 13:34 EDT 2022. Contains 353975 sequences. (Running on oeis4.)