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Number of 5*n X n 0..3 arrays with row sums 3 and column sums 15.
1

%I #6 Apr 26 2015 18:45:13

%S 1,116304,11936862061495,133937216531070195309888,

%T 54474595447150914468834015421847040,

%U 404868757253371611415640265892979872110459075840

%N Number of 5*n X n 0..3 arrays with row sums 3 and column sums 15.

%H R. H. Hardin, <a href="/A172783/b172783.txt">Table of n, a(n) for n=1..13</a>

%K nonn

%O 1,2

%A _R. H. Hardin_, Feb 06 2010