A172835 - OEIS

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

%S 0,580,2332105236,419542137630783552,1775125806066054844658927631,

%T 107592348627283647736871768193003754560,

%U 64299439861739255917710165174342650682005907347040

%N Number of 3*n X n 0..4 arrays with row sums 5 and column sums 15

%H R. H. Hardin, <a href="/A172835/b172835.txt">Table of n, a(n) for n=1..13</a>

%K nonn

%O 1,2

%A _R. H. Hardin_ Feb 06 2010