6568657domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumber of (n+2)X(6+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=10A255754Prime numbersat n=449149