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Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,3,0,1,4 for x=0,1,2,3,4
2

%I #5 Mar 31 2012 12:36:26

%S 1,31,553,7761,123151,1875863,28338246,434666223,6656162368,

%T 101518856651,1549818281847,23688276304457,361894920969682,

%U 5527193051141256,84429912619066523,1289786041484393709,19702421130556030141

%N Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,3,0,1,4 for x=0,1,2,3,4

%C Every 0 is next to 0 2's, every 1 is next to 1 3's, every 2 is next to 2 0's, every 3 is next to 3 1's, every 4 is next to 4 4's

%C Column 7 of A196493

%H R. H. Hardin, <a href="/A196492/b196492.txt">Table of n, a(n) for n = 1..200</a>

%e Some solutions for n=4

%e ..1..3..1..0..0..1..0....0..0..0..1..0..0..0....0..0..1..0..0..0..0

%e ..1..1..0..0..1..3..0....0..0..0..3..1..0..0....1..0..3..1..1..3..1

%e ..3..1..0..0..1..1..0....0..0..1..1..0..0..0....3..1..1..0..0..1..0

%e ..1..0..0..1..3..1..0....0..1..3..1..0..0..0....1..0..0..0..0..0..0

%K nonn

%O 1,2

%A _R. H. Hardin_ Oct 03 2011