937980816domain: NAppears in sequencesNumber of (n+2)X(n+2) 0..2 arrays with every row, column, diagonal or antidiagonal in each 3X3 subblock summing to a prime.at n=6A251811Number 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=6A251818