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%I #5 Mar 31 2012 12:36:03
%S 405,20097,424197,10670517,254648349,6182861913,149296412943,
%T 3610924080057,87290961055317,2110537794502179,51026182728455493,
%U 1233673268942605563,29826690561521146107,721125280774829859129
%N Number of (n+1)X4 0..2 arrays with every 2X2 subblock trace equal to some horizontal or vertical neighbor 2X2 subblock trace
%C Column 3 of A185845
%H R. H. Hardin, <a href="/A185839/b185839.txt">Table of n, a(n) for n = 1..200</a>
%e Some solutions for 3X4
%e ..2..1..1..0....0..1..0..2....1..0..2..2....2..2..0..1....1..0..0..2
%e ..2..2..0..0....1..2..2..2....2..2..2..0....1..1..0..1....0..0..2..2
%e ..0..2..2..1....0..1..1..0....1..1..0..0....1..2..1..1....0..1..2..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Feb 05 2011
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