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A146181
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Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 110-111-100 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 1, 133, 283, 2411, 6513, 104581, 308359, 31267501, 125706815, 30388182025, 158816649115, 38510941635475, 255401019744941, 142458224930527429, 1198142574949310095, 2063515953281030710129
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