A207345 - OEIS

%I #5 Mar 31 2012 12:37:16

%S 25,625,1704,12292,71344,388134,2367656,13950908,79860282,473919476,

%T 2786796897,16214534579,95457905658,560591392760,3278996579419,

%U 19256876712615,113017014575263,662243340003005,3886173014048250

%N Number of nX7 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 0 and 1 1 1 vertically

%C Column 7 of A207346

%H R. H. Hardin, <a href="/A207345/b207345.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 17 2012