619867domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumber of (n+2) X (6+2) 0..1 arrays with no 3 X 3 subblock diagonal sum 0 and no antidiagonal sum 3 and no row sum 0 or 3 and no column sum 0 or 3.at n=27A258964Prime numbersat n=50604