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%I #5 Mar 31 2012 12:36:04
%S 338,21466,4071834,1926378146,2795398080908,11449128594687024,
%T 127786000491037137748
%N Number of (n+2)X(n+2) binary arrays with each 3X3 subblock singular
%C Diagonal of A186052
%e Some solutions for 4X4
%e ..0..1..1..1....1..1..0..1....0..0..0..1....0..1..1..0....1..0..0..1
%e ..1..0..0..0....0..0..0..0....1..0..1..0....0..0..0..0....0..0..0..0
%e ..0..1..1..0....1..0..0..0....1..0..0..0....0..1..0..1....1..1..1..1
%e ..0..0..0..1....1..0..0..0....0..0..1..1....1..1..0..0....0..0..0..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Feb 11 2011