3378058domain: NAppears in sequencesNumber of (n+1)X(1+1) 0..3 arrays with every 2X2 subblock summing to a prime and those sums nondecreasing in every row and column.at n=7A251475T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock summing to a prime and those sums nondecreasing in every row and column.at n=28A251481