712352domain: NAppears in sequencesNumber of (n+1)X(1+1) 0..3 arrays with the sum of all four elements of every 2X2 subblock equal.at n=7A237008T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the sum of all four elements of every 2X2 subblock equal.at n=28A237015