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%I #4 Nov 06 2013 05:47:10
%S 0,778,185074,12322784,1130422470,122516675112,13176773912306,
%T 1401330180537464,149128308807116274,15891308131288905986,
%U 1693734891060505493574,180514807902138511042510
%N Number of 7Xn 0..3 arrays x(i,j) with each element horizontally, diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 4, no adjacent elements equal, and upper left element zero
%C Row 7 of A231246
%H R. H. Hardin, <a href="/A231252/b231252.txt">Table of n, a(n) for n = 1..59</a>
%e Some solutions for n=2
%e ..0..1....0..3....0..1....0..3....0..1....0..3....0..3....0..3....0..3....0..3
%e ..2..3....2..1....2..1....2..1....2..3....2..1....2..1....0..1....0..1....0..1
%e ..1..0....2..1....0..3....0..1....1..0....0..1....2..1....2..3....2..3....2..3
%e ..3..2....0..3....2..1....2..3....3..2....2..1....0..3....2..1....2..1....0..3
%e ..1..2....0..3....3..0....2..1....1..0....0..3....2..1....0..3....0..3....2..1
%e ..1..0....0..1....1..2....3..0....1..0....0..1....0..3....2..3....0..3....3..0
%e ..3..2....2..3....1..0....1..2....3..2....2..3....2..3....2..1....2..1....1..2
%K nonn
%O 1,2
%A _R. H. Hardin_, Nov 06 2013