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A146445 Number of n X n binary arrays with all ones connected only in a 1100-0110-0011 pattern in any orientation. 0
1, 1, 1, 9, 33, 185, 1861, 35285, 845657, 28275879, 1543673839, 135800422841, 17596518150277 (list; graph; refs; listen; history; internal format)
OFFSET

1,4

EXAMPLE

Maximal 8 X 8 example

.0.0.1.0.0.1.1.0

.0.1.1.0.1.1.0.1

.1.1.0.1.1.0.1.1

.1.0.1.0.0.1.1.0

.0.1.1.0.0.1.0.0

.1.1.0.1.1.0.1.1

.1.0.1.1.0.1.1.0

.0.1.1.0.1.1.0.0

CROSSREFS

Sequence in context: A147444 A137627 A189179 * A046997 A013488 A186762

Adjacent sequences:  A146442 A146443 A146444 * A146446 A146447 A146448

KEYWORD

nonn

AUTHOR

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

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Last modified February 15 23:53 EST 2012. Contains 205860 sequences.