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A147003
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Number of n X n binary arrays with all ones connected only in a 00100-11111-00100 pattern in any orientation.
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0
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1, 1, 1, 1, 7, 21, 77, 479, 3600, 33995, 482862, 8547925, 199841936, 6379998757, 265761442757, 14715360146745
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