156279294337domain: NAppears in sequencesNumber of (n+2)X(1+2) 0..2 arrays with some row, column, diagonal or antidiagonal in every 3X3 subblock summing to 3.at n=5A251638T(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=15A251641