A207910 - OEIS

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

%S 13,169,611,2209,13865,87025,417425,2002225,10896915,59305401,

%T 303611925,1554330625,8194919925,43206195321,224558681991,

%U 1167115069561,6108464797743,31970576988009,166753685864931,869761961442529

%N Number of 5Xn 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 0 and 0 1 1 vertically

%C Row 5 of A207908

%H R. H. Hardin, <a href="/A207910/b207910.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 21 2012