9016304domain: NAppears in sequencesNumber of (n+2)X(1+2) 0..3 arrays with every row, column, diagonal or antidiagonal in each 3X3 subblock summing to a prime.at n=6A251846T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every row, column, diagonal or antidiagonal in each 3X3 subblock summing to a prime.at n=21A251852