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Number of 3*n X 2*n 0..1 arrays with row sums 4 and column sums 6
1

%I #4 Mar 31 2012 12:35:40

%S 0,1,90291600,729833528645228700,91880966659006902855367890000,

%T 113498154592670786286712327731832894830000,

%U 972197559210817377231037831422299544032898553608000000

%N Number of 3*n X 2*n 0..1 arrays with row sums 4 and column sums 6

%H R. H. Hardin, <a href="/A172573/b172573.txt">Table of n, a(n) for n=1..17</a>

%K nonn

%O 1,3

%A _R. H. Hardin_ Feb 06 2010