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A199125 Number of n X n 0..2 arrays with values 0..2 introduced in row major order, the number of instances of each value within one of each other, and no element equal to any horizontal or vertical neighbor 0

%I

%S 1,2,6,258,11475,438502,358599045,247746055048,141388449764548

%N Number of n X n 0..2 arrays with values 0..2 introduced in row major order, the number of instances of each value within one of each other, and no element equal to any horizontal or vertical neighbor

%C Diagonal of A199133

%e Some solutions for n=5

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

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

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_ Nov 03 2011

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Last modified June 2 10:57 EDT 2020. Contains 334771 sequences. (Running on oeis4.)