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M. L. Stein and P. R. Stein, <a href="/A001496/a001496.pdf">Enumeration of Stochastic Matrices with Integer Elements</a>, Report LA-4434, Los Alamos Scientific Laboratory of the University of California, Los Alamos, NM, Jun 1970. [Annotated scanned copy]
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R. H. Hardin, <a href="/A172862/b172862_1.txt">Table of n, a(n) for n = 0..35</a>
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R. H. Hardin, <a href="/A172862/b172862_1.txt">Table of n, a(n) for n =1 0..35</a>
1,0,3
1, 1, 6, 231, 40176, 22069251, 30767936616, 94161778046406, 569304690994400256, 6274236760589024662176, 118285830126660123474844752, 3623440212198461411381072575512, 172850452498398420310370097345242112
1,23
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proposed
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Number of n X n 0..5 arrays with row sums 5 and column sums 5.
Column k=5 of A257493.
R. H. Hardin , Feb 06 2010
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