41946domain: NAppears in sequencesa(n) = floor((3*4^n + 2*3^n)/5).at n=8A178934Number of (n+2)X(6+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the central row and column plus the two sums of the diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally.at n=23A259004