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A230180 Number of n X 4 0..2 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value 2-x(i,j).

%I A230180 #7 Sep 21 2018 12:00:45
%S A230180 9,159,3411,73857,1603431,34825803,756450105,16430979183,356900507139,
%T A230180 7752307003185,168389408761527,3657619992450939,79447894698990441,
%U A230180 1725703595660236095,37484352623641494963,814205113293390761697
%N A230180 Number of n X 4 0..2 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value 2-x(i,j).
%H A230180 R. H. Hardin, <a href="/A230180/b230180.txt">Table of n, a(n) for n = 1..210</a>
%F A230180 Empirical: a(n) = 26*a(n-1) - 97*a(n-2) + 89*a(n-3) - 18*a(n-4) + a(n-5).
%F A230180 Empirical g.f.: 3*x*(3 - 25*x + 50*x^2 - 69*x^3 + 9*x^4) / ((1 - x)*(1 - 25*x + 72*x^2 - 17*x^3 + x^4)). - _Colin Barker_, Sep 21 2018
%e A230180 Some solutions for n=3:
%e A230180 ..2..0..0..2....2..0..1..1....2..0..2..0....0..2..2..0....2..0..2..0
%e A230180 ..2..1..1..1....2..2..0..2....2..1..1..1....0..0..2..0....0..2..1..1
%e A230180 ..0..2..2..0....2..0..0..2....1..0..2..0....2..1..1..1....2..0..1..1
%Y A230180 Column 4 of A230184.
%K A230180 nonn
%O A230180 1,1
%A A230180 _R. H. Hardin_, Oct 11 2013