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A147369
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Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 0111-1100-0111 pattern in any orientation.
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0
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1, 1, 1, 1, 5, 1, 19, 13, 300, 253, 9196, 2685, 408268, 46561, 21554860
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OFFSET
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1,5
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LINKS
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EXAMPLE
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Maximal 8 X 8 example
.1.0.1.0.0.1.0.1
.1.0.1.0.0.1.0.1
.1.1.1.0.0.1.1.1
.0.1.0.0.0.0.1.0
.1.0.1.0.0.1.0.1
.1.0.1.0.0.1.0.1
.1.1.1.0.0.1.1.1
.0.1.0.0.0.0.1.0
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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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