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A234727
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Number of (n+1) X (7+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 7 (constant-stress 1 X 1 tilings).
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0
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1344640, 2531888, 4577624, 10632200, 23194936, 62379416, 157274648, 467509400, 1311421240, 4191830168, 12727101464
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