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A147014
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Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 01000-11111-00010 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 1, 5, 13, 31, 111, 377, 1545, 10231, 72633, 559663, 5155711, 55582209, 698619471, 11001973207, 206072905483, 4521907343165, 116328599746355, 3545239477906611, 127491366766265465
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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
.0.0.0.0.0.1.0.0
.0.0.0.0.1.1.0.0
.0.0.0.0.0.1.0.0
.0.0.0.0.0.1.1.0
.0.1.0.0.0.1.0.0
.1.1.1.1.1.0.0.0
.0.0.0.1.0.0.0.0
.0.0.0.0.0.0.0.0
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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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