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Number of 6*n X 18 0..3 arrays with row sums 3 and column sums n.
1

%I #6 Mar 09 2023 17:16:08

%S 137225088000,1796185853884657144990080000,

%T 163283938767642016139942363441093164154880000,

%U 35452241260001460008130612784749576025029062217424089840000000

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

%H R. H. Hardin, <a href="/A172793/b172793.txt">Table of n, a(n) for n=1..11</a>

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 06 2010