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Search: id:A099865
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| A099865 |
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Numerator of sum of all elements M(i,j,k) = i*j/k, (i,j,k = 1..n). a(n) = Numerator[Sum[Sum[Sum[i*j/k,{i,1,n}],{j,1,n}],{k,1,n}]]. |
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| 1, 27, 66, 625, 2055, 21609, 10164, 123282, 320805, 4465505, 920821, 14537549, 104285363, 41010655, 47830280, 2816662204, 6447760119, 139131611847, 26153100905, 29313445875, 13068630729, 111103313343, 91973556693
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