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%I #9 May 24 2021 15:50:17
%S 1,4,37,736,24194,2075747,401449253,174957270750
%N Number of n X n binary arrays with each element equal to either the sum mod 2 of its horizontal and vertical neighbors or the sum mod 2 of its diagonal and antidiagonal neighbors.
%C Diagonal of A183517.
%e Some solutions for 3 X 3
%e ..1..0..0....1..0..0....1..0..1....1..0..0....0..1..0....0..0..0....1..1..1
%e ..1..1..0....1..0..1....0..1..0....1..1..0....1..0..0....0..1..0....1..1..1
%e ..1..0..0....0..0..1....1..0..0....1..1..1....0..0..0....0..0..1....1..0..1
%Y Cf. A183517.
%K nonn
%O 1,2
%A _R. H. Hardin_ Jan 05 2011