A172699 - OEIS

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

%S 111920,755265546000,8432855707512236000,117188101836293753504038800,

%T 1840612120873072393197860408401920,

%U 31265195228897742672250371317378119778400

%N Number of 5*n X 5 0..2 arrays with row sums 3 and column sums 3*n

%H R. H. Hardin, <a href="/A172699/b172699.txt">Table of n, a(n) for n=1..19</a>

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 06 2010