A172767 - OEIS

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

%S 0,1,19546975,80349760089959316,11279631181377626877359650100,

%T 31270791853997716490787029515342398010161,

%U 1138966845227847811612995810985909503258495428544062880

%N Number of 3*n X n 0..3 arrays with row sums 6 and column sums 18

%H R. H. Hardin, <a href="/A172767/b172767.txt">Table of n, a(n) for n=1..11</a>

%K nonn

%O 1,3

%A _R. H. Hardin_ Feb 06 2010