A172704 - OEIS

%I #4 Mar 31 2012 12:35:40

%S 137225088000,1796185853884657144990080000,

%T 151012959794833573952000702864304916267008000,

%U 30037987606650431798215986206016098569029061818175150320000000

%N Number of 6*n X 18 0..2 arrays with row sums 3 and column sums n

%H R. H. Hardin, <a href="/A172704/b172704.txt">Table of n, a(n) for n=1..11</a>

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 06 2010