Number of 0..3 colorings of a 3X(n+1) array circular in the n+1 direction with new values 0..3 introduced in row major order.

A214114

Number of 0..3 colorings of a 3X(n+1) array circular in the n+1 direction with new values 0..3 introduced in row major order.

Terms

    a(0) =25a(1) =121a(2) =3502a(3) =44900a(4) =825105a(5) =12777541a(6) =214404272a(7) =3462096250a(8) =56936675435a(9) =928191589611

External references