T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with each 3X3 subblock having a positive determinant.

A184649

T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with each 3X3 subblock having a positive determinant.

Terms

    a(0) =106449a(1) =3745509a(2) =3745509a(3) =127914873a(4) =398829619a(5) =127914873a(6) =4349714604a(7) =40374310135a(8) =40374310135a(9) =4349714604a(10) =148865535558a(14) =148865535558

External references