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A146924
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Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 0110-1111-0110 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 5, 13, 32, 116, 329, 1343, 7578, 43263, 292424, 2337772, 20731810, 226646472, 2872512529, 41869404152, 707811350778, 14078518669729, 324770949354296
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