1196729319domain: NAppears in sequencesNumber of (n+1)X(3+1) 0..2 arrays with every 2X2 subblock summing to 2 4 or 6.at n=6A251330Number of (n+1)X(7+1) 0..2 arrays with every 2X2 subblock summing to 2 4 or 6.at n=2A251334