A172827 - OEIS

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

%S 0,0,28681,2449665403360,4267335124853033521800,

%T 106107338700855492388229350341800,

%U 27866376170914402863794530315047399586447050

%N Number of 2*n X n 0..4 arrays with row sums 9 and column sums 18

%H R. H. Hardin, <a href="/A172827/b172827.txt">Table of n, a(n) for n=1..10</a>

%K nonn

%O 1,3

%A _R. H. Hardin_ Feb 06 2010