1/8 of the number of 8-colorings of an n X n array symmetric about both diagonal and antidiagonal.
A145252
1/8 of the number of 8-colorings of an n X n array symmetric about both diagonal and antidiagonal.
Terms
- a(0) =1a(1) =7a(2) =343a(3) =14749a(4) =4439449a(5) =1172648743
External references
- oeis: A145252