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%I #4 Oct 31 2013 05:41:49
%S 0,8974,10550264,9617769208,8988055879558,8428081775041778,
%T 7899599586975791528,7404104956669952823022,6939731658949591906274844,
%U 6504482883205181770088621656,6096531906604802985735282788524
%N Number of nX6 0..3 arrays x(i,j) with each element horizontally, vertically or antidiagonally next to at least one element with value (x(i,j)+1) mod 4, and upper left element zero
%C Column 6 of A230840
%H R. H. Hardin, <a href="/A230839/b230839.txt">Table of n, a(n) for n = 1..27</a>
%e Some solutions for n=3
%e ..0..0..0..0..0..1....0..0..0..2..2..1....0..0..0..2..3..0....0..0..0..1..3..3
%e ..1..2..1..0..1..2....1..1..0..3..0..3....1..3..1..2..1..1....1..0..3..2..0..3
%e ..0..3..3..0..3..1....2..3..1..2..2..2....2..2..3..0..3..2....2..3..1..1..0..2
%K nonn
%O 1,2
%A _R. H. Hardin_, Oct 31 2013