Number of horizontal, diagonal and antidiagonal neighbor colorings of the even squares of a 4Xn array with new integer colors introduced in row major order.
A216462
Number of horizontal, diagonal and antidiagonal neighbor colorings of the even squares of a 4Xn array with new integer colors introduced in row major order.
Terms
- a(0) =2a(1) =5a(2) =20a(3) =203a(4) =3429a(5) =83440a(6) =2711768a(7) =112073062a(8) =5691327040a(9) =346212384169
External references
- oeis: A216462