A230330 - OEIS

A230330

Number of n X n 0..2 arrays x(i,j) with each element horizontally, vertically or antidiagonally next to at least one element with value (x(i,j)+1) mod 3, and upper left element zero

%I #5 Dec 18 2015 18:18:43

%S 0,6,534,438284,2788320240,137077642883940,52211092034409972862,

%T 154024647784870223714406548,3519277849947878097413487571658476

%N Number of n X n 0..2 arrays x(i,j) with each element horizontally, vertically or antidiagonally next to at least one element with value (x(i,j)+1) mod 3, and upper left element zero

%C Diagonal of A230337

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_, Oct 16 2013