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%I #4 Mar 13 2013 04:40:06
%S 0,32,1682,95648,3760845,225200914,8981996365,555681741893,
%T 22385476818439,1411431030197268,57210083819337309,
%U 3652301054192073142,148668908783460133336,9574830993089261328274,390958259282559073567108
%N Number of 3Xn 0..3 arrays with exactly floor(3Xn/2) elements equal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order
%C Row 3 of A223052
%H R. H. Hardin, <a href="/A223054/b223054.txt">Table of n, a(n) for n = 1..19</a>
%e Some solutions for n=3
%e ..0..0..1....0..1..1....0..1..0....0..0..1....0..1..2....0..1..2....0..1..2
%e ..2..1..2....2..3..1....2..1..0....2..0..0....3..0..0....3..3..3....1..2..3
%e ..0..1..2....0..1..0....1..3..3....2..3..1....3..0..3....0..2..3....0..2..1
%K nonn
%O 1,2
%A _R. H. Hardin_ Mar 13 2013
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