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A147108
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Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1000-1000-1111-0010 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 1, 1, 1, 191, 363, 3291, 7695, 88749, 226757, 6714813, 20617717, 2114445309, 8176286977, 1364735915577, 6441222315165, 1219041231137751
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OFFSET
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1,9
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LINKS
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EXAMPLE
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Maximal 9 X 9 example
.0.0.1.0.0.0.1.0.0
.1.1.1.1.0.1.1.1.1
.1.0.0.0.0.0.0.0.1
.1.0.0.0.0.0.0.0.1
.0.0.0.0.0.0.0.0.0
.0.0.0.1.0.1.0.0.0
.0.0.0.1.0.1.0.0.0
.1.1.1.1.0.1.1.1.1
.0.1.0.0.0.0.0.1.0
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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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