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Number of 7*n X 7 0..3 arrays with row sums 4 and column sums 4*n
1

%I #4 Mar 31 2012 12:35:41

%S 887226868605,1771064195990555279483745075,

%T 7745310191767932461627415566004172302489000,

%U 47307220244039925184729002585595148532177882871899513973875

%N Number of 7*n X 7 0..3 arrays with row sums 4 and column sums 4*n

%H R. H. Hardin, <a href="/A172798/b172798.txt">Table of n, a(n) for n=1..10</a>

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 06 2010