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A299328 Number of nXn 0..1 arrays with every element equal to 2, 3, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero. 0
0, 1, 8, 263, 46286, 27685946, 65181402152, 567774280392040, 18419330490239501061 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Diagonal of A299334.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A299334.

Sequence in context: A300734 A081058 A003386 * A098275 A221606 A230590

Adjacent sequences:  A299325 A299326 A299327 * A299329 A299330 A299331

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 07 2018

STATUS

approved

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Last modified May 26 22:57 EDT 2019. Contains 323597 sequences. (Running on oeis4.)