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%I #4 Jun 15 2013 14:12:09
%S 1331,469273,67402167,9326184515,1412775737517,219013376708219,
%T 33686064493125445,5158814075664351755,790219064809543544019,
%U 121119067554834244254625,18565905217863946042822197
%N Number of nX7 (-1,0,1) arrays of determinants of 2X2 subblocks of some (n+1)X8 binary array
%C Column 7 of A226717
%H R. H. Hardin, <a href="/A226716/b226716.txt">Table of n, a(n) for n = 1..15</a>
%e Some solutions for n=3
%e .-1.-1..1.-1..0..1.-1...-1.-1..1.-1..0..1..0...-1.-1..1.-1.-1..0..1
%e .-1..1.-1.-1..0..1.-1...-1..1.-1..0.-1..1..1....0..0..0..0..1..0.-1
%e ..0..0.-1..1..0..0..1....1.-1.-1..1..1.-1.-1....1..0..0..1.-1..1..1
%K nonn
%O 1,1
%A _R. H. Hardin_ Jun 15 2013
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