A172702 - OEIS

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

%S 0,924,28425752310361,128167620006030442731491136,

%T 31265195228897742672250371317378119778400,

%U 208166284750977846936978491445694459933214981665738410000

%N Number of 6*n X n 0..2 arrays with row sums 3 and column sums 18

%H R. H. Hardin, <a href="/A172702/b172702.txt">Table of n, a(n) for n=1..11</a>

%K nonn

%O 1,2

%A _R. H. Hardin_ Feb 06 2010