A207413 - OEIS

%I #8 Dec 18 2015 18:18:01

%S 2,16,92,742,13260,220882,4094666,129528304,4643477356,183171965504,

%T 10948746139548,797831881523648,65446536338563458,7746605907720894574,

%U 1149785247198798823392,195841032765969991278104

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

%C Diagonal of A207419

%H R. H. Hardin, <a href="/A207413/b207413.txt">Table of n, a(n) for n = 1..17</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 17 2012