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A147475 Number of n X n binary arrays with all ones connected only in a 1100-1111-1100 pattern in any orientation. 0
1, 1, 1, 9, 25, 93, 633, 7225, 110262, 1975143, 50880872, 1933660635, 104069532412, 7622213781825 (list; graph; refs; listen; history; internal format)
OFFSET

1,4

EXAMPLE

Maximal 8 X 8 example

.1.1.0.0.0.1.1.1

.1.1.1.1.0.1.1.1

.1.1.0.0.0.0.1.0

.0.0.0.0.0.0.1.0

.0.1.0.0.0.0.0.0

.0.1.0.0.0.0.1.1

.1.1.1.0.1.1.1.1

.1.1.1.0.0.0.1.1

CROSSREFS

Sequence in context: A075064 A147332 A147460 * A146674 A083672 A193644

Adjacent sequences:  A147472 A147473 A147474 * A147476 A147477 A147478

KEYWORD

nonn

AUTHOR

R. H. Hardin (rhhardin(AT)att.net)

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Last modified February 16 12:15 EST 2012. Contains 205909 sequences.