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A305361 Number of nXn 0..1 arrays with every element unequal to 1, 2, 3, 5 or 8 king-move adjacent elements, with upper left element zero. 0
0, 7, 39, 398, 7196, 179644, 8803975, 615439372, 69977566829, 13294810916472 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A305367.

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A305367.

Sequence in context: A207154 A203111 A198048 * A202763 A035357 A207152

Adjacent sequences:  A305358 A305359 A305360 * A305362 A305363 A305364

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 31 2018

STATUS

approved

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Last modified January 17 20:06 EST 2022. Contains 350410 sequences. (Running on oeis4.)