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A147132
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Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1000-1001-1111 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 1, 17, 21, 513, 983, 10393, 25501, 371965, 1045185, 45350635, 151885957, 15301404559, 63656571009, 10185822253393, 51223616106841, 10431158742897567
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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
.0.0.0.0.0.0.0.0
.0.0.0.0.0.0.0.0
.0.0.0.0.0.0.0.0
.0.0.0.0.0.0.0.0
.0.1.1.0.0.1.1.0
.0.0.1.0.0.1.0.0
.0.0.1.0.0.1.0.0
.1.1.1.0.0.1.1.1
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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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