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A299360 Number of nXn 0..1 arrays with every element equal to 0, 2, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero. 0
1, 5, 23, 1157, 107653, 45416563, 67756659422, 330429744419500, 5443538715354004433 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A299366.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A299366.

Sequence in context: A003487 A055490 A261935 * A002811 A177134 A199361

Adjacent sequences:  A299357 A299358 A299359 * A299361 A299362 A299363

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 08 2018

STATUS

approved

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Last modified December 15 14:37 EST 2019. Contains 329999 sequences. (Running on oeis4.)