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A147398
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Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1000-1110-0111-0001 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 1, 1, 1, 63, 111, 801, 1619, 12671, 27823, 349917, 870983, 40498015, 122215163, 11398125347, 41676149367, 3782723396203, 16295789305103, 1930244576207107, 9658343102457355
(list; graph; refs; listen; history; internal format)
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