1/3 the number of nX8 0..2 arrays with every element equal to exactly one or two of its horizontal and vertical neighbors.
A185558
1/3 the number of nX8 0..2 arrays with every element equal to exactly one or two of its horizontal and vertical neighbors.
Terms
- a(0) =43a(1) =63544a(2) =29168100a(3) =15594228288
External references
- oeis: A185558