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A147333
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Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 01000-11100-00111-00010 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 1, 1, 1, 11, 15, 249, 439, 3525, 7243, 86415, 202083, 5858179, 16166669, 860820947, 2825911051, 229675621375, 888780016627, 105005577010021, 476804047189207, 92035361068862489
(list; graph; refs; listen; history; internal format)
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