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%I #6 Dec 18 2015 18:17:54
%S 1,7,54,2093,260917,108428600,147146211014,642756367398421
%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 4,3,0,1,1 for x=0,1,2,3,4
%C Every 0 is next to 0 4'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 1's
%C Diagonal of A198155
%e Some solutions containing all values 0 to 4 for n=4
%e ..2..0..0..1....1..0..0..2....1..3..1..0....0..1..3..1....1..3..1..0
%e ..0..2..1..3....3..1..0..0....0..1..4..1....1..4..1..0....0..1..4..1
%e ..0..1..4..1....1..4..1..0....0..0..1..3....3..1..0..0....0..2..1..3
%e ..1..3..1..0....0..1..3..1....2..0..0..1....1..0..0..2....2..0..0..1
%K nonn
%O 1,2
%A _R. H. Hardin_ Oct 21 2011
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