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A147326
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Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 00100-00100-11111-00100 pattern in any orientation.
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0
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1, 1, 1, 1, 5, 1, 9, 1, 54, 15, 1010, 305, 26482, 3993, 1090248, 85931, 79078189, 4847983, 11622838412, 605747926, 3166762458310, 124132744693, 1523768055043582, 41573048881668
(list; graph; refs; listen; history; internal format)
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