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A147319
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Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 00100-00100-00100-11111 pattern in any orientation.
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1, 1, 1, 1, 5, 1, 9, 1, 50, 19, 1045, 405, 26459, 5465, 942760, 98073, 47165993, 3767543, 4686396466, 402496574, 955119646127, 74080050007, 337888010503075, 18773415116111
(list; graph; refs; listen; history; internal format)
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