Number of n X n 0..2 arrays with exactly floor(n X n/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..2 order.
A222683
Number of n X n 0..2 arrays with exactly floor(n X n/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..2 order.
Terms
- a(0) =1a(1) =3a(2) =32a(3) =3189a(4) =419562a(5) =589802909a(6) =832227066041
External references
- oeis: A222683