A172847 - OEIS

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

%S 305540235000,54918587341306311174536985000,

%T 85504723470329847456379126545730424791071000000,

%U 351499515037067154764556950151761640777013401021265237589794665000

%N Number of 5*n X 20 0..4 arrays with row sums 4 and column sums n

%H R. H. Hardin, <a href="/A172847/b172847.txt">Table of n, a(n) for n=1..10</a>

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 06 2010