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%I #6 Dec 18 2015 18:17:54
%S 1,9,57,1111,45162,4268977,924904506,452341382317,504191764208638
%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 2,0,1,0,1 for x=0,1,2,3,4
%C Every 0 is next to 0 2's, every 1 is next to 1 0's, every 2 is next to 2 1's, every 3 is next to 3 0's, every 4 is next to 4 1's
%C Diagonal of A197679
%e Some solutions for n=4
%e ..0..0..0..0....2..1..1..1....0..0..0..0....0..0..0..0....1..1..1..0
%e ..0..0..3..1....1..0..0..0....0..0..0..0....3..0..0..3....0..0..3..0
%e ..0..3..0..1....1..0..0..3....3..0..3..0....0..0..3..0....0..0..0..0
%e ..1..2..1..2....1..0..3..0....0..0..1..1....1..1..1..0....0..0..0..0
%K nonn
%O 1,2
%A _R. H. Hardin_ Oct 17 2011
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