247141229domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumber of (2+2)X(n+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 3 4 6 or 7 and every 3X3 column and antidiagonal sum not equal to 0 3 4 6 or 7.at n=14A252642Prime numbersat n=13531356