%I
%S 45,1971,270333,119606211,173185290765,827309554361235,
%T 13102412661293146461,690154670186627261773347
%N Number of (n+1)X(n+1) 0..2 arrays with every 2X2 subblock having equal diagonal elements or equal antidiagonal elements
%C Diagonal of A203835
%e Some solutions for n=4
%e ..2..2..1..2..2....2..1..0..2..1....0..1..2..2..0....0..0..0..1..2
%e ..2..1..2..1..2....2..2..1..0..2....0..0..1..2..2....1..0..2..0..1
%e ..1..2..1..1..1....1..2..2..1..0....2..0..0..1..2....2..1..0..0..0
%e ..1..1..0..1..2....0..1..2..2..1....0..2..0..0..1....2..2..1..0..0
%e ..1..2..1..1..1....0..0..1..2..2....0..0..2..0..0....1..2..2..1..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 06 2012
