1/5 of the number of 5-colorings of an n X n array symmetric about both diagonal and antidiagonal.
A145244
1/5 of the number of 5-colorings of an n X n array symmetric about both diagonal and antidiagonal.
Terms
- a(0) =1a(1) =4a(2) =64a(3) =832a(4) =43264a(5) =1827904a(6) =308948224a(7) =42427198528
External references
- oeis: A145244