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A146371
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Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 0100-1111-0010 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 1, 3, 13, 25, 41, 95, 287, 1007, 4035, 15127, 64629, 303257, 1705229, 10297463, 68501897, 489679427, 4005352321, 35909136431, 368495419925, 4031093827951, 49953339711585
(list; graph; refs; listen; history; internal format)
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