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A316546 Number of nXn 0..1 arrays with every element unequal to 0, 1, 3, 4, 7 or 8 king-move adjacent elements, with upper left element zero. 0
1, 5, 10, 42, 251, 1811, 18978, 336604, 7870292, 267729787, 13016021132 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A316552.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A316552.

Sequence in context: A271202 A186031 A305246 * A187877 A328605 A122173

Adjacent sequences:  A316543 A316544 A316545 * A316547 A316548 A316549

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 06 2018

STATUS

approved

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Last modified October 20 10:43 EDT 2021. Contains 348100 sequences. (Running on oeis4.)