18418693domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumber of (n+2)X(4+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 2 4 6 or 7 and every 3X3 column and antidiagonal sum not equal to 0 2 4 6 or 7.at n=11A252429Prime numbersat n=1176366