A172963 - OEIS

%I #4 Mar 31 2012 12:35:42

%S 1,670,133721236,2043207067941480,1047367983257881640491925,

%T 10336768663024665454036757208361400,

%U 1313075006655438005305387554231256477491331800

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

%H R. H. Hardin, <a href="/A172963/b172963.txt">Table of n, a(n) for n=1..10</a>

%K nonn

%O 1,2

%A _R. H. Hardin_ Feb 06 2010