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A265592
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Number of 3Xn 0..3*n-1 arrays with upper left zero and lower right 3*n-1 and each element differing from its horizontal and antidiagonal neighbors by a power of two.
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1
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3, 79, 9327, 927797, 82725668, 12404184853, 1961916558139, 205199911524811, 32566506281706134, 3625304390972323537, 618755342504397622109, 87849263845468588422281, 14938881681298157851105131
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