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A146192
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Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 101-111-100 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 1, 1, 5, 13, 25, 47, 133, 423, 1611, 6775, 32933, 168271, 931101, 5598003, 40830563, 323824599, 3032262553, 30578017195, 362047227023
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