178707667domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumber of (n+2)X(2+2) 0..1 arrays with every 3X3 subblock sum of four medians of central row, central column, diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally.at n=7A254506Prime numbersat n=9962197