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A146588
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Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 0110-1111-0100 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 1, 1, 1, 17, 17, 49, 49, 301, 301, 4891, 4891, 104131, 104131, 3555075, 3555075, 179509487, 179509487, 14641599949
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