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A147398
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Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1000-1110-0111-0001 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 1, 1, 1, 63, 111, 801, 1619, 12671, 27823, 349917, 870983, 40498015, 122215163, 11398125347, 41676149367, 3782723396203, 16295789305103, 1930244576207107, 9658343102457355
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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
.0.0.0.1.0.1.0.0.0
.0.1.1.1.0.1.1.1.0
.1.1.1.0.0.0.1.1.1
.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
.0.1.1.1.0.1.1.1.0
.1.1.1.0.0.0.1.1.1
.1.0.0.0.0.0.0.0.1
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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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