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A196139
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Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 3,0,4,1,2 for x=0,1,2,3,4
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%I #6 Dec 18 2015 18:17:47
%S 1,5,7,83,481,2599,24615,330889,4431097,82611569,1973678929,
%T 55783136985
%N Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 3,0,4,1,2 for x=0,1,2,3,4
%C Every 0 is next to 0 3's, every 1 is next to 1 0's, every 2 is next to 2 4's, every 3 is next to 3 1's, every 4 is next to 4 2's
%C Diagonal of A196146
%e Some solutions for n=4
%e .1.3.1.0...0.1.3.1...1.3.1.0...0.0.1.1...0.1.1.0
%e .0.1.1.0...0.1.1.0...0.1.1.0...1.1.1.0...1.1.1.1
%e .1.1.1.1...0.1.1.0...0.1.1.1...3.1.1.0...1.0.0.1
%e .1.0.0.1...1.3.1.0...1.1.0.1...1.0.1.1...1.0.0.1
%K nonn
%O 1,2
%A _R. H. Hardin_ Sep 28 2011
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