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%I #6 Mar 26 2023 10:39:25
%S 7056,345744,49787136,5576504976,659389472784,77047385296896,
%T 9026159037210000,1056819881616572304,123752228014558128384,
%U 14490829645245700563600,1696821126905800754981136
%N Number of (n+1) X (3+1) 0..3 arrays with no element equal to all horizontal neighbors or equal to all vertical neighbors.
%C Column 3 of A238523.
%H R. H. Hardin, <a href="/A238520/b238520.txt">Table of n, a(n) for n = 1..145</a>
%F Empirical: a(n) = 102*a(n-1) +2016*a(n-2) -29659*a(n-3) +67326*a(n-4) +111132*a(n-5) -38416*a(n-6).
%e Some solutions for n=1
%e ..2..1..1..3....3..0..2..1....3..0..2..0....0..3..3..2....0..1..2..3
%e ..1..0..3..1....0..1..3..0....0..2..1..2....3..1..1..0....3..2..1..2
%Y Cf. A238523.
%K nonn
%O 1,1
%A _R. H. Hardin_, Feb 28 2014
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