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A147001
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Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 00100-00100-11111 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 1, 4, 5, 13, 19, 43, 57, 239, 521, 2347, 5442, 24758, 63173, 355006, 1139569, 7776109, 29105899, 223723640, 955226817, 8533424348
(list; graph; refs; listen; history; internal format)
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