Number of horizontal and antidiagonal neighbor colorings of the odd squares of a 4Xn array with new integer colors introduced in row major order.

A216086

Number of horizontal and antidiagonal neighbor colorings of the odd squares of a 4Xn array with new integer colors introduced in row major order.

Terms

    a(0) =2a(1) =7a(2) =52a(3) =602a(4) =12840a(5) =322768a(6) =12297870a(7) =514264344a(8) =29562890980

External references