A229846 - OEIS

%I #4 Oct 01 2013 06:54:02

%S 63,63291,31783299,17324310663,9366963651897,5071373978989773,

%T 2745117942652795617,1485981308554100717397,804382842721296064467525,

%U 435424391066549741979527775,235701650566916249474911785897

%N Number of nX7 0..2 arrays x(i,j) with each element horizontally or vertically next to at least one element with value 2-x(i,j)

%C Column 7 of A229847

%H R. H. Hardin, <a href="/A229846/b229846.txt">Table of n, a(n) for n = 1..18</a>

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Oct 01 2013