T(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.

A251481

T(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.

Terms

    a(0) =114a(1) =586a(2) =586a(3) =2908a(4) =3904a(5) =2908a(6) =12670a(7) =24182a(8) =24182a(9) =12670a(10) =54344a(11) =123739a(12) =183485a(13) =123739a(14) =54344a(15) =218854a(16) =609565a(17) =1096596a(18) =1096596a(19) =609565a(20) =218854a(21) =874280a(22) =2696488a(23) =6216665a(24) =7485767a(25) =6216665a(26) =2696488a(27) =874280a(28) =3378058a(29) =11697274

External references