A172593 - OEIS

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

%S 56586600,1289144584143523800,91880966659006902855367890000,

%T 10697695830125272790880922760946584535000,

%U 1639181069042816463750016605763302490015414336761600

%N Number of 5*n X 10 0..1 arrays with row sums 4 and column sums 2*n

%H R. H. Hardin, <a href="/A172593/b172593.txt">Table of n, a(n) for n=1..11</a>

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 06 2010