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A147430
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Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 1010-1111-0101 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 1, 1, 1, 9, 9, 25, 25, 89, 89, 469, 469, 5217, 5217, 82459, 82459, 1354121, 1354121, 28702995, 28702995, 915889909, 915889909
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