191708742domain: NAppears in sequencesNumber of (n+1)X(1+1) 0..4 arrays with every 2X2 subblock summing to a prime.at n=6A251508Number of (n+1)X(7+1) 0..4 arrays with every 2X2 subblock summing to a prime.at n=0A251514T(n,k)=Number of (n+1)X(k+1) 0..4 arrays with every 2X2 subblock summing to a prime.at n=21A251515