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A146936
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Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1111-1111 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 3, 7, 14, 39, 110, 377, 1728, 8445, 46261, 295085, 2140608, 18281422, 182971434, 2102657419, 27813973723, 424019281880, 7465054408643, 152329530023565, 3599461276657166, 98302190158216996, 3100794527661403207
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