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Number of n X n 0..2 arrays with no average of any element and its diagonal, antidiagonal, horizontal and vertical neighbors equal to one.
0

%I #8 Jun 07 2021 15:28:54

%S 2,62,4420,2869182,16571687222

%N Number of n X n 0..2 arrays with no average of any element and its diagonal, antidiagonal, horizontal and vertical neighbors equal to one.

%C Diagonal of A200809.

%e Some solutions for 3 X 3

%e ..0..1..1....1..2..1....0..0..0....1..1..1....0..0..2....0..2..1....2..2..0

%e ..0..1..0....1..2..2....2..0..0....2..1..2....0..0..1....2..1..2....1..2..2

%e ..0..0..1....2..1..2....1..0..2....1..1..1....1..0..2....2..2..0....1..1..0

%Y Cf. A200809.

%K nonn

%O 1,1

%A _R. H. Hardin_ Nov 22 2011