152031391763domain: NAppears in sequencesNumber of (n+1)X(n+1) 0..2 arrays with every 2X2 subblock summing to 2 3 4 5 or 6.at n=3A251382Number of (n+1)X(4+1) 0..2 arrays with every 2X2 subblock summing to 2 3 4 5 or 6.at n=3A251386T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock summing to 2 3 4 5 or 6.at n=24A251390