2706176domain: NAppears in sequencesa(n) = n^2*(n+1)^2*(n+2)/12.at n=31A004302Number of (5+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of the medians of the diagonal and antidiagonal minus the two sums of the central row and column nondecreasing horizontally, vertically and ne-to-sw antidiagonally.at n=9A255760