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A147210
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Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1100-0111-0011 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 1, 19, 31, 671, 1393, 17427, 44279, 1106663, 3412457, 320938143, 1265591403, 240272372207, 1198689233053, 298357443446865, 1842799915443649, 817026217664351385, 6225260273965873969
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OFFSET
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1,7
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LINKS
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EXAMPLE
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Maximal 8 X 8 example
.0.1.1.0.0.1.1.0
.0.1.1.0.0.1.1.0
.1.1.0.0.0.0.1.1
.1.0.0.0.0.0.0.1
.0.0.1.0.0.1.0.0
.0.1.1.0.0.1.1.0
.1.1.0.0.0.0.1.1
.1.1.0.0.0.0.1.1
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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