%I #5 Mar 31 2012 12:35:51

%S 10,400,1859,17260,295753,2389384,22721738,283516092,2756716450,

%T 27258639012,302118088795,3099237521787,31465624971995,

%U 334218914293045,3472848277046483,35747092755177221,374202463026001299

%N Number of nX4 0..3 arrays with every element equal to either the sum mod 4 of its vertical neighbors or the sum mod 4 of its horizontal neighbors

%C Column 4 of A183492

%H R. H. Hardin, <a href="/A183487/b183487.txt">Table of n, a(n) for n = 1..90</a>

%e Some solutions for 3X4

%e ..0..0..3..3....0..0..1..1....2..2..0..0....1..1..0..0....0..0..0..0

%e ..2..0..0..0....2..0..2..2....1..1..0..1....0..0..0..1....2..1..3..2

%e ..2..0..0..0....2..0..1..1....3..3..0..1....0..0..0..1....2..2..0..2

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 05 2011