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A147269 Number of n X n binary arrays with all ones connected only in a 1000-1000-1111-0001 pattern in any orientation. 0
1, 1, 1, 9, 33, 105, 641, 6905, 201549, 4387885, 127114651, 5630544435 (list; graph; refs; listen; history; internal format)
OFFSET

1,4

EXAMPLE

Maximal 8 X 8 example

.1.0.0.0.1.1.1.0

.1.1.1.1.0.0.1.0

.0.0.0.1.0.0.1.0

.0.0.0.1.0.0.1.1

.1.0.0.0.1.1.0.0

.1.0.0.0.0.1.0.0

.1.1.1.1.0.1.0.0

.0.0.0.1.0.1.1.1

CROSSREFS

Sequence in context: A031880 A002881 A036543 * A147123 A147107 A147115

Adjacent sequences:  A147266 A147267 A147268 * A147270 A147271 A147272

KEYWORD

nonn

AUTHOR

R. H. Hardin (rhhardin(AT)att.net), Nov 04 2008

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Last modified February 14 03:03 EST 2012. Contains 205567 sequences.