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%I #5 Jun 29 2015 15:21:46
%S 11,129,3270,189211,25009044,7648655920,5419416491691,
%T 8914474231755265,34039639215186145019,301765460087856679774300,
%U 6209472935212672846469197010,296556812586707699012345431324530
%N Number of (n+1)X(n+1) 0..1 arrays with each 2X2 subblock having clockwise pattern 0000 0001 0101 0111
%C Diagonal of A259515
%H R. H. Hardin, <a href="/A259507/b259507.txt">Table of n, a(n) for n = 1..14</a>
%e Some solutions for n=4
%e ..0..0..0..0..0....1..0..0..1..0....1..0..1..0..1....0..0..0..0..1
%e ..0..1..0..0..1....0..1..0..0..1....0..1..0..0..0....0..0..1..0..0
%e ..0..0..1..0..0....1..0..1..0..0....1..0..1..0..1....0..0..0..0..0
%e ..0..0..0..1..0....0..0..0..1..0....0..1..0..1..0....0..0..0..1..0
%e ..0..0..0..0..0....1..0..1..1..1....0..0..1..1..1....1..0..0..0..0
%Y Cf. A259515
%K nonn
%O 1,1
%A _R. H. Hardin_, Jun 29 2015
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