Number of n X n nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to any antidiagonal neighbor (colorings ignoring permutations of colors).
A208781
Number of n X n nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to any antidiagonal neighbor (colorings ignoring permutations of colors).
Terms
- a(0) =1a(1) =10a(2) =9089a(3) =3038188519
External references
- oeis: A208781