1741500domain: NAppears in sequencesNumber of (n+2)X(4+2) 0..2 arrays with every row, column, diagonal or antidiagonal in each 3X3 subblock summing to a prime.at n=6A251815Number of (n+2)X(7+2) 0..2 arrays with every row, column, diagonal or antidiagonal in each 3X3 subblock summing to a prime.at n=3A251818