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A147352
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Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 01010-11111-00100 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 9, 13, 35, 115, 509, 1869, 11373, 63633, 550775, 4084072, 49640647, 508023623, 8372503581
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