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A230669 Number of n X n 0..2 arrays x(i,j) with each element horizontally, diagonally or antidiagonally next to at least one element with value 2-x(i,j) 0

%I

%S 0,15,1173,730503,4022141121,169908632412447,55314799986833459367,

%T 140277459587738407279576815

%N Number of n X n 0..2 arrays x(i,j) with each element horizontally, diagonally or antidiagonally next to at least one element with value 2-x(i,j)

%C Diagonal of A230675

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_, Oct 27 2013

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Last modified January 22 15:13 EST 2022. Contains 350481 sequences. (Running on oeis4.)