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A202745
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Number of 4Xn 0..1 arrays with row sums equal and column sums unequal to adjacent columns
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0
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2, 10, 86, 838, 6870, 62398, 613950, 6018166, 59293518, 601267870, 6215708078, 64727555230, 679456522670, 7200537529326, 76879249259246, 825573117666246, 8913831877350462, 96733061472889806, 1054372579551732366
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