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A231742 Number of nX3 0..3 arrays with no element less than a strict majority of its horizontal and vertical neighbors.

%I A231742 #7 Jul 23 2025 06:39:17
%S A231742 16,318,4430,60806,784076,9945132,126926437,1625269595,20795246129,
%T A231742 265933115701,3401419933047,43511214955897,556577494538011,
%U A231742 7119285135911590,91064607669052460,1164839484230300582
%N A231742 Number of nX3 0..3 arrays with no element less than a strict majority of its horizontal and vertical neighbors.
%C A231742 Column 3 of A231746
%H A231742 R. H. Hardin, <a href="/A231742/b231742.txt">Table of n, a(n) for n = 1..210</a>
%H A231742 R. H. Hardin, <a href="/A231742/a231742.txt">Empirical recurrence of order 87</a>
%F A231742 Empirical recurrence of order 87 (see link above)
%e A231742 Some solutions for n=4
%e A231742 ..3..3..1....1..1..2....3..3..1....0..3..1....1..1..1....1..1..1....1..2..1
%e A231742 ..0..0..0....3..1..1....3..0..0....0..0..0....2..1..2....3..2..2....0..0..1
%e A231742 ..0..0..0....2..2..1....0..0..0....1..0..0....3..1..1....3..3..2....0..0..2
%e A231742 ..1..1..3....2..2..1....0..2..3....2..0..0....0..0..0....0..0..0....1..3..3
%K A231742 nonn
%O A231742 1,1
%A A231742 _R. H. Hardin_, Nov 13 2013