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A297014 Number of nXn 0..1 arrays with each 1 adjacent to 3, 4 or 6 king-move neighboring 1s. 0
1, 2, 8, 46, 852, 74534, 11172600, 5380073625, 8482089381228 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A297020.

LINKS

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

EXAMPLE

Some solutions for n=6

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

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

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

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

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

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

CROSSREFS

Cf. A297020.

Sequence in context: A099765 A246386 A096656 * A102009 A254747 A298698

Adjacent sequences:  A297011 A297012 A297013 * A297015 A297016 A297017

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 23 2017

STATUS

approved

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Last modified August 20 04:25 EDT 2019. Contains 326139 sequences. (Running on oeis4.)