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A234726
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Number of (n+1)X(6+1) 0..7 arrays with every 2X2 subblock having its diagonal sum differing from its antidiagonal sum by 7 (constant stress 1X1 tilings)
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1
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339328, 692512, 1349336, 3403528, 8002936, 23137720, 62379416, 197412088, 587074168, 1982807032, 6335722136, 22491544888, 75906457336, 280381206520, 988119053336, 3770353824568, 13765440733048, 53960918334712
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