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%I #8 Oct 01 2021 18:17:07
%S 915702,30631134,989438596,30654215226,978050637454,31056846439654,
%T 981555541329694,31129923319285058,986788018195669218,
%U 31261059190076491058,990735792319754562254,31398037364368755881486
%N Number of (n+2) X 9 binary arrays with each 3 X 3 subblock nonsingular.
%C Column 7 of A185534.
%H R. H. Hardin, <a href="/A185532/b185532.txt">Table of n, a(n) for n = 1..38</a>
%e Some solutions for 4 X 9
%e ..0..0..1..0..0..1..0..1..0....0..0..1..0..0..1..1..1..1
%e ..0..1..0..1..1..0..1..1..0....0..1..1..0..1..0..1..0..0
%e ..1..0..0..1..0..0..1..0..1....1..0..0..1..0..1..0..0..1
%e ..0..0..1..1..1..1..0..1..0....0..0..1..0..0..1..1..1..0
%Y Cf. A185534.
%K nonn
%O 1,1
%A _R. H. Hardin_, Jan 30 2011