%I #5 Mar 31 2012 12:36:58
%S 112,1682,21470,262088,3191760,38438912,457030140,5384729088,
%T 62912016986,730166033682,8416701868906,96505946204192,
%U 1100473855059936,12494678609945088,141221958080796180,1590433321339235592
%N Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..1 introduced in row major order
%C Diagonal of A203923
%e Some solutions for n=3
%e ..0..1..0..1..1....0..0..1..0..0....0..1..0..0..0....0..0..1..0..0
%e ..1..0..1..1..1....0..1..0..0..1....1..0..0..0..1....0..1..0..1..1
%e ..0..1..1..1..0....1..0..0..1..0....0..0..0..0..0....1..0..1..0..1
%e ..1..1..1..1..0....0..0..1..0..0....0..0..0..0..0....1..1..0..1..0
%e ..1..0..0..1..1....0..1..1..1..0....0..1..1..0..0....0..1..1..0..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 07 2012
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