A222505 - OEIS

%I #4 Feb 23 2013 17:06:41

%S 3,3,15,84,497,2862,15420,86570,484976,2751326,15597305,89022483,

%T 508390703,2915183250,16739260404,96360825455,555513635334,

%U 3208071753051,18550893260858,107413402302763,622649366897782,3613180083184007

%N Number of nX4 0..1 arrays with exactly floor(nX4/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..1 order

%C Column 4 of A222509

%H R. H. Hardin, <a href="/A222505/b222505.txt">Table of n, a(n) for n = 1..177</a>

%e Some solutions for n=3

%e ..0..0..1..1....0..0..1..1....0..0..0..0....0..0..0..0....0..0..0..0

%e ..1..1..1..1....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0

%e ..1..1..1..1....0..0..0..0....1..1..0..0....0..1..0..1....0..0..1..1

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 23 2013