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A147187
Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 11000-01110-00011 pattern in any orientation.
0
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 13, 13, 61, 61, 329, 329, 2787, 2787, 39701, 39701, 747265, 747265, 18941331, 18941331, 668354617, 668354617
OFFSET
1,11
EXAMPLE
Maximal 11 X 11 example
.0.0.0.0.0.0.0.0.0.0.0
.0.0.0.0.0.0.0.0.0.0.0
.0.0.0.1.1.0.1.1.0.0.0
.0.1.1.1.0.0.0.1.1.1.0
.1.1.0.0.0.0.0.0.0.1.1
.0.0.0.0.0.0.0.0.0.0.0
.1.1.0.0.0.0.0.0.0.1.1
.0.1.1.1.0.0.0.1.1.1.0
.0.0.0.1.1.0.1.1.0.0.0
.0.0.0.0.0.0.0.0.0.0.0
.0.0.0.0.0.0.0.0.0.0.0
CROSSREFS
Sequence in context: A321654 A302513 A147013 * A147069 A303312 A146471
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 04 2008
STATUS
approved