%I #4 Jul 28 2015 19:27:41
%S 2732,4296,11370,22212,40916,105058,219852,434066,1050126,2356780,
%T 4693462,10782734,24926220,51270870,112254332,260975658,556547696,
%U 1188249860,2722931988,5983413184,12716775116,28508190056,63712199118
%N Number of (n+2)X(7+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00010001
%C Column 7 of A260544
%H R. H. Hardin, <a href="/A260543/b260543.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=4
%e ..0..1..1..0..0..0..0..0..1....0..0..0..0..1..0..0..1..0
%e ..0..0..0..0..0..1..0..0..1....0..0..0..0..1..0..0..0..0
%e ..0..0..0..0..0..1..0..0..0....1..1..0..0..0..0..0..0..0
%e ..0..1..1..0..0..0..0..0..0....0..0..0..0..0..0..0..1..0
%e ..0..0..0..0..0..0..0..0..1....0..0..0..1..1..0..0..1..0
%e ..0..0..0..0..1..1..0..0..0....1..0..0..0..0..0..0..0..0
%Y Cf. A260544
%K nonn
%O 1,1
%A _R. H. Hardin_, Jul 28 2015