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A234160
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Number of (n+1)X(7+1) 0..3 arrays with every 2X2 subblock having the absolute values of all six edge and diagonal differences no larger than 1
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1
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649450, 193116778, 57647946980, 17566272589090, 5391006112450218, 1661285969383854576, 513096321262694789718, 158690337181889624875158, 49123836190724283158557568, 15216294709692549181512831606
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