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%I #3 Mar 31 2012 12:35:49
%S 32,819,22077,587920,15701273,419045269,11185495872,298561305103,
%T 7969215344753,212714316418464,5677773794982333,151551208150533689,
%U 4045206823611571168,107974712600136074779,2882062422625926933109
%N Number of nX5 binary matrices with no 2X2 block having four 1's
%C Column 5 of A181253
%H R. H. Hardin, <a href="/A181248/b181248.txt">Table of n, a(n) for n=1..200</a>
%F Empirical: a(n)=20*a(n-1)+188*a(n-2)-192*a(n-3)-1660*a(n-4)+2804*a(n-5)-507*a(n-6)-624*a(n-7)
%K nonn
%O 1,1
%A _R. H. Hardin_ Oct 10 2010
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