%I #5 Mar 31 2012 12:35:54
%S 5,47,730,21935,1146964,112439612,19815396763,6453534773135,
%T 3829236554668274,4179465974043040784,8354373579461755560239,
%U 30686484702497770109712496,206872691877488790419478443459
%N Half the number of (n+1)X(n+1) binary arrays with no 2X2 subblock having exactly 2 ones
%C Diagonal of A183782
%e Some solutions with a(1,1)=0 for 3X3
%e ..0..1..0....0..0..0....0..0..1....0..0..0....0..0..0....0..1..0....0..0..0
%e ..0..0..0....1..0..0....0..0..0....0..0..1....0..0..0....0..0..0....0..1..0
%e ..0..0..0....0..0..0....1..0..0....0..1..1....1..0..1....0..0..1....1..1..1
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 07 2011