A172648 - OEIS

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

%S 0,0,0,0,113400,50432680389260400,101720498887190010630546323580,

%T 1021718304724615708073668620385984867252800,

%U 52487498990202837315687104908805779583934003413314100425

%N Number of 2*n X n 0..2 arrays with row sums 9 and column sums 18

%H R. H. Hardin, <a href="/A172648/b172648.txt">Table of n, a(n) for n=1..11</a>

%K nonn

%O 1,5

%A _R. H. Hardin_ Feb 06 2010