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A147443
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Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1010-1111-1010 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 13, 23, 73, 316, 1171, 5078, 33627, 212172, 2092051, 17868818, 243014937, 3050949895, 53472938233
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