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A235253
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Number of (n+1) X (3+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 7, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).
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1
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2672, 8328, 24232, 80812, 251656, 878988, 2873128, 10362212, 35132248, 129681452, 452445096, 1699526196, 6067071432, 23102391980, 84025709016, 323468947012, 1194691128744, 4640522916700, 17359355152040, 67935545177540
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