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%I #4 Mar 31 2012 12:35:40
%S 1680,90291600,12025780892160,2407147216735338000,
%T 607807501825156719166080,178355054529362612768336870400,
%U 58142871081888953760431694254592000
%N Number of 3*n X 9 0..1 arrays with row sums 3 and column sums n
%H R. H. Hardin, <a href="/A172568/b172568.txt">Table of n, a(n) for n=1..25</a>
%K nonn
%O 1,1
%A _R. H. Hardin_ Feb 06 2010