%I #5 Mar 31 2012 12:37:05
%S 223,21537,7191926,8174802163,32079295935853,433101439309430572,
%T 20100570131126768440800
%N Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically or nw-to-se diagonally, and new values 0..1 introduced in row major order
%C Diagonal of A205273
%e Some solutions for n=3
%e ..0..0..1..1..1....0..0..0..0..0....0..1..0..0..1....0..0..1..0..1
%e ..0..1..1..0..0....1..1..0..1..0....1..1..1..0..0....0..1..1..0..1
%e ..0..0..1..0..0....1..1..1..1..1....1..0..1..1..0....0..0..0..0..0
%e ..1..1..1..0..1....1..1..1..0..1....0..1..1..1..0....1..0..0..1..0
%e ..1..0..1..1..0....0..0..1..0..0....1..0..1..0..1....1..1..1..0..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 24 2012