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A230680 Number of 6Xn 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).

%I A230680 #6 Jun 02 2025 08:45:39
%S A230680 0,11925,3669765,1100265795,436827078531,169908632412447,
%T A230680 65376252475286079,25197971211829585887,9715194049282171327617,
%U A230680 3745393333629058405378449,1443910366341874206277548363
%N A230680 Number of 6Xn 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 A230680 Row 6 of A230675
%H A230680 R. H. Hardin, <a href="/A230680/b230680.txt">Table of n, a(n) for n = 1..33</a>
%e A230680 Some solutions for n=3
%e A230680 ..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0
%e A230680 ..2..2..1....0..2..2....2..2..1....2..2..0....2..2..0....0..2..2....0..2..2
%e A230680 ..1..1..0....0..1..1....1..1..1....2..0..2....0..1..1....1..1..1....0..0..0
%e A230680 ..0..0..2....2..0..1....2..2..2....1..1..0....1..0..2....0..0..2....1..2..0
%e A230680 ..0..2..2....2..2..0....0..0..0....1..2..0....1..1..0....0..2..0....2..1..0
%e A230680 ..2..0..2....0..0..0....2..0..2....2..0..0....1..2..1....1..1..1....2..0..2
%K A230680 nonn
%O A230680 1,2
%A A230680 _R. H. Hardin_, Oct 27 2013