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%I #5 Mar 31 2012 12:35:52
%S 9,299,5287,95101,1728533,31363527,569461759,10339213765,187720469393,
%T 3408294462361,61881741606489,1123538699592837,20399220213631985,
%U 370372813824090515,6724571832069212589,122092833670153549855
%N Number of nX4 0..2 arrays with each element equal to either the maximum or the minimum of its horizontal and vertical neighbors
%C Column 4 of A183554
%H R. H. Hardin, <a href="/A183549/b183549.txt">Table of n, a(n) for n = 1..200</a>
%e Some solutions for 3X4
%e ..2..0..0..0....1..1..1..1....0..0..0..1....1..1..0..0....2..2..2..0
%e ..2..2..0..1....0..1..1..1....2..2..0..1....1..1..0..2....1..2..2..0
%e ..2..0..0..1....0..1..0..0....2..2..0..0....0..0..2..2....1..1..2..2
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 05 2011
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