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A146644
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Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 1010-1111-1000 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 1, 1, 1, 17, 17, 53, 53, 329, 329, 3935, 3935, 73477, 73477, 2119711, 2119711, 76531381, 76531381
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