198028549domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumber of (n+2)X(1+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 2 3 4 6 or 7 and every 3X3 column and antidiagonal sum not equal to 2 3 4 6 or 7.at n=29A252400Prime numbersat n=10975746