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%I #4 Aug 01 2015 06:14:21
%S 2584,2976,6908,13170,16000,37882,80516,119194,231008,526102,890868,
%T 1551098,3444912,6540148,11105704,22909488,46468620,81665548,
%U 156797736,323324270,597713676,1104974160,2236199980,4307963032,7924411232
%N Number of (n+2)X(7+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00010101
%C Column 7 of A260841
%H R. H. Hardin, <a href="/A260840/b260840.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=4
%e ..1..1..0..0..1..0..0..0..0....0..1..0..0..1..0..0..1..0
%e ..0..1..0..0..0..0..0..1..1....0..1..0..0..1..0..0..0..0
%e ..0..0..0..0..0..0..0..0..0....0..0..0..0..0..0..0..0..0
%e ..0..0..0..0..1..0..0..0..0....0..0..0..0..0..0..0..1..1
%e ..0..1..0..0..1..0..0..1..0....0..1..0..0..1..0..0..0..0
%e ..1..0..0..0..0..0..0..0..1....1..1..0..0..1..0..0..0..0
%Y Cf. A260841
%K nonn
%O 1,1
%A _R. H. Hardin_, Aug 01 2015
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