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Number of 6*n X 12 0..2 arrays with row sums 2 and column sums n
1

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

%S 7484400,62347376347779600,1796185853884657144990080000,

%T 90708013716277730071013162104546890000,

%U 6309193293073551526242474424812731974830376454400

%N Number of 6*n X 12 0..2 arrays with row sums 2 and column sums n

%H R. H. Hardin, <a href="/A172705/b172705.txt">Table of n, a(n) for n=1..15</a>

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 06 2010