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A147233
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Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 1101-0111-0001 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 1, 1, 1, 17, 17, 65, 65, 377, 377, 4203, 4203, 88657, 88657, 2446623, 2446623, 84129749, 84129749
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