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

%S 3110940,807998767676100,452489654840076972518400,

%T 352231966693098849132080247442500,

%U 329566582178898535416815000275618647613440

%N Number of 7*n X 7 0..1 arrays with row sums 2 and column sums 2*n

%H R. H. Hardin, <a href="/A172606/b172606.txt">Table of n, a(n) for n=1..14</a>

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 06 2010