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A147499
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Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 1110-0110-0111 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, 57, 57, 501, 501, 8327, 8327, 120657, 120657, 1392679, 1392679, 36251459, 36251459, 1768772831, 1768772831
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