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A147010
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Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 00100-11111-00100 pattern in any orientation.
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0
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1, 1, 1, 1, 3, 5, 9, 19, 56, 167, 758, 2457, 14728, 66625, 526225, 3298653, 34425031, 276512141, 3848586911, 41626261490
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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
.0.1.0.0.0.1.0.0
.0.1.0.1.1.1.1.1
.1.1.1.0.0.1.0.0
.0.1.0.0.0.0.1.0
.0.1.0.0.0.0.1.0
.0.0.1.0.0.1.1.1
.1.1.1.1.1.0.1.0
.0.0.1.0.0.0.1.0
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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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