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A231215 Number of (n+1) X (4+1) 0..2 arrays with no element unequal to a strict majority of its horizontal and vertical neighbors, with values 0..2 introduced in row major order.

%I A231215 #9 Nov 01 2014 03:11:38
%S A231215 12,59,408,2892,20027,139438,969461,6745110,46938804,326645650,
%T A231215 2273218682,15819608975,110091246193,766140117967,5331683762978,
%U A231215 37103974744989,258212125773531,1796936761480570,12505151919361622
%N A231215 Number of (n+1) X (4+1) 0..2 arrays with no element unequal to a strict majority of its horizontal and vertical neighbors, with values 0..2 introduced in row major order.
%C A231215 Column 4 of A231219.
%H A231215 R. H. Hardin, <a href="/A231215/b231215.txt">Table of n, a(n) for n = 1..210</a>
%H A231215 R. H. Hardin, <a href="/A231215/a231215.txt">Empirical recurrence of order 68</a>
%F A231215 Empirical recurrence of order 68 (see link above).
%e A231215 Some solutions for n=4:
%e A231215 ..0..1..1..2..2....0..1..1..2..2....0..0..1..1..2....0..0..0..0..0
%e A231215 ..0..1..1..2..2....0..1..1..2..2....0..0..1..1..2....0..0..1..1..0
%e A231215 ..0..1..1..1..2....0..2..2..2..2....0..0..1..1..2....1..1..1..1..0
%e A231215 ..0..1..1..1..2....0..2..2..1..1....0..0..1..1..2....1..1..1..1..0
%e A231215 ..0..1..1..1..2....0..2..2..1..1....2..2..2..2..2....1..1..1..1..0
%Y A231215 Cf. A231219.
%K A231215 nonn
%O A231215 1,1
%A A231215 _R. H. Hardin_, Nov 05 2013