A207430 - OEIS

%I #5 Mar 31 2012 12:37:17

%S 21,441,3633,29929,341329,3892729,39698733,404854641,4315250265,

%T 45995236225,481815567745,5047180107649,53243344229835,

%U 561670803164025,5908341620443125,62151175576890625,654538444302027625

%N Number of 6Xn 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 0 1 0 vertically

%C Row 6 of A207426

%H R. H. Hardin, <a href="/A207430/b207430.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 17 2012