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A269082 Number of nXn binary arrays with some element plus some horizontally, vertically or antidiagonally adjacent neighbor totalling two not more than once. 1
2, 11, 114, 2238, 80422, 5372270, 673690710, 159449028034, 71709929917104, 61507638902069052, 100988524469068110876, 318195132133780181426070, 1928131640777904103958251102, 22507425106868892327680953474828 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A269089.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..26

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A269089.

Sequence in context: A090534 A286869 A181168 * A304639 A130222 A197993

Adjacent sequences:  A269079 A269080 A269081 * A269083 A269084 A269085

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 19 2016

STATUS

approved

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Last modified September 15 02:19 EDT 2019. Contains 327062 sequences. (Running on oeis4.)