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A147079
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Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 10000-11111-10000 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 6, 11, 18, 29, 61, 169, 515, 1567, 4591, 14997, 48832, 200369, 837466, 4124094, 19846005, 109320099, 602369436
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