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A147254
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Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 11100-00100-00111 pattern in any orientation.
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0
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1, 1, 1, 1, 5, 5, 21, 29, 145, 485, 3243, 11105, 102013, 454621, 6519613, 40834561, 722449417
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