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A282878 Number of nXn 0..1 arrays with no 1 equal to more than one of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly one element. 0
0, 2, 74, 3762, 480995, 128768496, 79687436788, 115172557654616, 393143666098549156, 3196549492640753656296, 62216948503916625663186184 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A282885.

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A282885.

Sequence in context: A240174 A295172 A322281 * A062552 A116172 A238820

Adjacent sequences:  A282875 A282876 A282877 * A282879 A282880 A282881

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 24 2017

STATUS

approved

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Last modified December 9 16:42 EST 2019. Contains 329879 sequences. (Running on oeis4.)