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A236818
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Number of (n+1)X(7+1) 0..2 arrays with the maximum plus the lower median minus the minimum of every 2X2 subblock equal
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1
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307321, 17221539, 947327860, 60011383119, 3864575378035, 259816398739966, 17618985802053806, 1211073956028846315, 83483742398439663501, 5780759617802840054529, 400577105983988319369802
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