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A146596
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Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 1000-1000-1111 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 1, 1, 1, 17, 17, 77, 77, 549, 549, 6061, 6061, 126381, 126381, 3867721, 3867721, 164716773, 164716773
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