A172808 - OEIS

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

%S 0,0,55,157984,2461011960,148699584483880,29715346096043717550,

%T 17246529136870025302912000,26159597034338175244538552103907,

%U 95066344634881957233042525618261985200

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

%H R. H. Hardin, <a href="/A172808/b172808.txt">Table of n, a(n) for n=1..15</a>

%K nonn

%O 1,3

%A _R. H. Hardin_ Feb 06 2010