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%I #5 Jul 26 2015 17:57:22
%S 34,92,658,5034,57524,1095328,24138984,741446708,35549850396,
%T 2210679193297,185698612792568,22953437585181163,3891199671596923784,
%U 894945430246534184300,292131961025408714854594
%N Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000000 00000001 or 00010101
%C Diagonal of A260475
%H R. H. Hardin, <a href="/A260467/b260467.txt">Table of n, a(n) for n = 1..17</a>
%e Some solutions for n=4
%e ..0..0..1..0..0..0....0..1..0..0..0..1....0..0..0..0..0..0....0..0..0..0..0..1
%e ..0..0..0..0..0..0....0..0..0..0..0..0....1..0..0..0..0..0....0..0..0..0..0..0
%e ..0..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0....1..0..0..0..0..0
%e ..0..0..1..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0
%e ..0..0..0..0..0..1....0..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0
%e ..0..0..0..0..0..0....1..0..0..0..0..0....0..0..0..1..0..0....0..1..0..0..1..0
%Y Cf. A260475
%K nonn
%O 1,1
%A _R. H. Hardin_, Jul 26 2015
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