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A147140
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Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1000-1100-0110-0011 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 1, 1, 1, 87, 159, 1731, 3703, 46857, 115477, 2401469, 6836409, 422076549, 1471030175, 219087502441, 947868551011, 168623871394941, 877710670520219, 224838418801232961, 1395473160547757611
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