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%I #5 Mar 31 2012 12:35:31
%S 4,44,469,4776,48047,482895,4854639,48809845,490753552,4934223120,
%T 49610514652,498802509247,5015145456885,50424133267633,
%U 506982946384063,5097394665460444,51251097416909895,515297550767237152
%N Number of nX4 binary arrays with all 1s connected and a path of 1s from top row to lower right corner
%H R. H. Hardin, <a href="/A163013/b163013.txt">Table of n, a(n) for n=1..44</a>
%F Empirical: a(n)= 15*a(n-1) -59*a(n-2) +97*a(n-3) -19*a(n-4) -210*a(n-5) +222*a(n-6) +22*a(n-7) -113*a(n-8) +7*a(n-9) -71*a(n-10) +13*a(n-11) +a(n-12). [From _R. J. Mathar_, Aug 11 2009]
%K nonn
%O 1,1
%A _R. H. Hardin_ Jul 20 2009
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