356863993domain: 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 and vertically.at n=12A254843Prime numbersat n=19152217