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A199652 Number of nX5 0..2 arrays with values 0..2 introduced in row major order and each element equal to no more than two horizontal and vertical neighbors.

%I A199652 #7 Jul 22 2025 13:21:57
%S A199652 41,8037,1357484,230693158,39209840355,6663970316970,1132589231853096,
%T A199652 192491652879392515,32715334199617664326,5560205218374521415185,
%U A199652 944996676143473092852595,160608949278619262130353064
%N A199652 Number of nX5 0..2 arrays with values 0..2 introduced in row major order and each element equal to no more than two horizontal and vertical neighbors.
%C A199652 Column 5 of A199655
%H A199652 R. H. Hardin, <a href="/A199652/b199652.txt">Table of n, a(n) for n = 1..200</a>
%e A199652 Some solutions for n=3
%e A199652 ..0..0..0..0..1....0..0..0..0..0....0..0..0..1..2....0..0..0..0..0
%e A199652 ..0..1..1..2..2....0..1..1..1..1....1..1..2..1..2....1..2..2..1..1
%e A199652 ..0..2..2..2..0....2..1..2..2..0....1..0..2..2..1....0..2..1..2..2
%K A199652 nonn
%O A199652 1,1
%A A199652 _R. H. Hardin_ Nov 08 2011