A196849


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


0


%I
%S 1,11,206,16876,4326720,3805929995,11300853019444,113522093851497024
%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 3,1,0,2,4 for x=0,1,2,3,4
%C Every 0 is next to 0 3's, every 1 is next to 1 1's, every 2 is next to 2 0's, every 3 is next to 3 2's, every 4 is next to 4 4's
%C Diagonal of A196856
%e Some solutions for n=4
%e ..0..0..0..0....0..0..1..1....0..0..0..2....0..1..1..0....0..0..0..0
%e ..2..0..0..2....0..0..0..0....2..0..0..0....0..0..0..0....0..0..1..1
%e ..1..1..0..1....2..2..2..1....2..0..2..2....2..1..2..1....1..1..2..0
%e ..0..0..0..1....0..0..0..1....0..1..1..0....0..1..0..1....0..0..0..0
%K nonn
%O 1,2
%A _R. H. Hardin_ Oct 06 2011
