%I #6 Mar 01 2023 15:34:04
%S 293,865,5527,64309,1374165,47407259,2525118941,207194435581,
%T 26296727620193,5146601734676793,1551231801668961273
%N Number of (n+2) X (n+2) 0..2 arrays with no row, column, diagonal or antidiagonal in any 3 X 3 subblock summing to 2 or 4.
%C Diagonal of A251682.
%e Some solutions for n=4
%e ..2..0..1..0..0..1....2..1..2..2..2..1....0..0..0..1..0..2....2..2..1..2..2..2
%e ..0..1..0..0..1..2....2..2..2..2..2..2....0..1..0..0..1..0....2..2..2..2..1..2
%e ..1..0..0..1..2..0....2..2..2..2..2..2....0..0..0..0..0..1....2..2..2..2..2..2
%e ..0..0..1..2..0..1....1..2..2..2..2..2....1..0..0..0..0..0....1..2..2..2..2..1
%e ..0..1..2..0..1..2....2..2..2..2..2..1....0..1..0..0..1..0....2..1..2..2..2..2
%e ..1..2..0..1..0..0....2..1..2..2..2..2....0..0..1..0..0..0....2..2..1..2..2..2
%Y Cf. A251682.
%K nonn
%O 1,1
%A _R. H. Hardin_, Dec 06 2014