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A146622
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Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 1001-1111 pattern in any orientation.
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1, 1, 1, 1, 1, 1, 1, 3, 5, 11, 17, 31, 67, 255, 681, 2579, 7475, 30835, 113699, 646479, 2916183, 18956135, 100069407, 770834039, 4965697461, 47266430445, 367691554109, 4176001047493, 38902939183671
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