381543775543domain: NAppears in sequencesNumber of (n+2)X(3+2) 0..2 arrays with some row, column, diagonal or antidiagonal in every 3X3 subblock summing to 3.at n=2A251640T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with some row, column, diagonal or antidiagonal in every 3X3 subblock summing to 3.at n=12A251641