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A147500
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Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1110-0110-0111 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 3, 9, 19, 37, 159, 849, 4243, 19707, 136969, 1272775, 12839957
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