A172797 - OEIS

%I #4 Mar 31 2012 12:35:41

%S 4662857360,19483897303054057473600,

%T 177485739636656023698217362159890000,

%U 2255071025881975002973276574847623754650721480000,34489400617513696317244454709620842599380338820310459110031360

%N Number of 7*n X 7 0..3 arrays with row sums 3 and column sums 3*n

%H R. H. Hardin, <a href="/A172797/b172797.txt">Table of n, a(n) for n=1..12</a>

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 06 2010