A207911 - OEIS

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

%S 18,324,1278,5041,39831,314721,1726758,9474084,62431074,411400089,

%T 2464567047,14764437081,92881236582,584304302404,3583711091042,

%U 21979959981841,136591044276099,848823810045561,5238992009252400

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

%C Row 6 of A207908

%H R. H. Hardin, <a href="/A207911/b207911.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 21 2012