70039777210domain: NAppears in sequencesNumber of (n+1)X(3+1) 0..4 arrays with every 2X2 subblock summing to a prime.at n=4A251510Number of (n+1) X (5+1) 0..4 arrays with every 2 X 2 subblock summing to a prime.at n=2A251512T(n,k)=Number of (n+1)X(k+1) 0..4 arrays with every 2X2 subblock summing to a prime.at n=23A251515