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Number of nX4 0..3 arrays with each element equal to either the sum mod 4 of its horizontal and vertical neighbors or the sum mod 4 of its diagonal and antidiagonal neighbors
1

%I #5 Mar 31 2012 12:35:52

%S 10,128,1326,16704,124568,1260440,12593728,127023332,1319837248,

%T 12961478564,130844028200,1321487686388,13343782478808,

%U 135086068850496,1360709615352544,13741314468124836,138768727626932600

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

%C Column 4 of A183541

%H R. H. Hardin, <a href="/A183538/b183538.txt">Table of n, a(n) for n = 1..18</a>

%e Some solutions for 3X4

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 05 2011