Number of horizontal and antidiagonal neighbor colorings of the even squares of an nX6 array with new integer colors introduced in row major order.

A216336

Number of horizontal and antidiagonal neighbor colorings of the even squares of an nX6 array with new integer colors introduced in row major order.

Terms

    a(0) =2a(1) =42a(2) =2440a(3) =373780a(4) =87852160a(5) =37060650272

External references