%I #4 Mar 31 2012 12:35:42
%S 1,9331,69327885583,69404300198350892236,
%T 3373513537183933018216388397350,
%U 4081159676302022080974044453167358453805921,76587973156243192496223417009664279130517333252040973460
%N Number of 3*n X n 0..6 arrays with row sums 6 and column sums 18
%H R. H. Hardin, <a href="/A172914/b172914.txt">Table of n, a(n) for n=1..11</a>
%K nonn
%O 1,2
%A _R. H. Hardin_ Feb 06 2010
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