20039054

Appears in sequences

• Number of (n+1) X (1+1) 0..3 arrays with every 2 X 2 subblock summing to a prime.at n=6A251452
• Number of (n+1) X (7+1) 0..3 arrays with every 2 X 2 subblock summing to a prime.at n=0A251458
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock summing to a prime.at n=21A251459