A207893 - OEIS

%I #5 Mar 31 2012 12:37:20

%S 19,361,1080,6952,38160,205258,1153532,6420722,35306016,196164150,

%T 1088708030,6022687942,33388715092,185122745390,1025484329530,

%U 5683145307278,31499382991888,174545900126878,967280691347214

%N Number of nX6 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 0 and 1 1 1 vertically

%C Column 6 of A207895

%H R. H. Hardin, <a href="/A207893/b207893.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 21 2012