%I #5 Mar 31 2012 12:36:00
%S 3,35,3090,1181303,1925704384,13061240432092,364710845961492808,
%T 41619801566809753837565,19314484317434151178477352552
%N Half the number of (n+1)X(n+1) binary arrays with equal numbers of majority one 2X2 subblocks and majority zero 2X2 subblocks
%C Diagonal of A184467
%e Some solutions for 3X3
%e ..0..0..0....0..1..0....0..0..0....0..1..0....0..0..1....0..1..1....0..1..0
%e ..1..1..0....1..0..1....1..0..1....0..1..0....0..1..1....1..0..1....1..0..1
%e ..0..1..0....0..1..0....1..1..1....0..1..0....1..0..0....1..0..0....1..0..1
%e ...
%e ...E..M.......E..E.......M..M.......E..E.......M..P.......E..P.......E..E...
%e ...P..E.......E..E.......P..P.......E..E.......E..E.......E..M.......E..E...
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 15 2011
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