2324761359domain: NAppears in sequencesNumber of (n+1)X(4+1) 0..2 arrays with every 2X2 subblock summing to 3 4 or 5.at n=3A251347T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock summing to 3 4 or 5.at n=24A251351