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A058391
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Number of 5 X 5 matrices with nonnegative integer entries and all row sums equal to n, up to row and column permutation.
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6
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1, 7, 198, 5929, 145168, 2459994, 30170387, 282159907, 2114430613, 13190940964, 70598379694, 331820068035, 1395291176641, 5327752138987, 18698405435444, 60922707883197, 185814239933254, 534246250634068, 1456622823771075
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