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A147347
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Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 01010-11111-00100 pattern in any orientation.
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0
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1, 1, 1, 1, 7, 1, 25, 9, 149, 33, 5089, 931, 204509, 26325, 14205068, 1129487, 2130205171, 121812575, 553442984916, 24953439069, 285966193523255, 9101315937099, 294148529555161566, 6619074013350903
(list; graph; refs; listen; history; internal format)
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