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A147127
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Number of n X n binary arrays symmetric about both diagonal and antidiagonal 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, 1, 3, 7, 15, 27, 51, 137, 397, 1327, 4515, 15837, 61007, 262125, 1291801
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