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A147129
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Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 1000-1000-1111-1000 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 1, 1, 7, 25, 45, 79, 171, 569, 1763, 6023, 22593, 106741, 481403, 2734225, 13695379, 86954465
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