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A146412
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Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1000-1111-0100 pattern in any orientation.
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0
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1, 1, 1, 1, 5, 25, 59, 371, 1829, 12351, 114789, 1410427, 19272237, 385707683, 8418983493, 256858401273
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