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%I #5 Mar 31 2012 12:36:27
%S 1,13,121,1003,11843,123261,1272060,13167317,137002955,1435498461,
%T 15112707121,159542157831,1687279432202,17865758424479,
%U 189328499039498,2007534176165707,21295364228486167,225957961165658372
%N Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 1,3,2,4,0 for x=0,1,2,3,4
%C Every 0 is next to 0 1's, every 1 is next to 1 3's, every 2 is next to 2 2's, every 3 is next to 3 4's, every 4 is next to 4 0's
%C Column 7 of A196922
%H R. H. Hardin, <a href="/A196921/b196921.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=4
%e ..0..0..0..0..0..0..0....2..2..2..0..0..0..0....0..2..2..2..0..0..0
%e ..0..0..0..0..0..0..0....2..0..2..0..0..0..0....0..2..0..2..0..0..0
%e ..0..0..0..0..0..0..0....2..0..2..0..2..2..0....0..2..0..2..0..4..0
%e ..0..0..0..0..0..0..0....2..2..2..0..2..2..0....0..2..2..2..0..0..0
%K nonn
%O 1,2
%A _R. H. Hardin_ Oct 07 2011
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