Number of n X n 0..2n-2 arrays with each element differing from its horizontal and vertical neighbors by one or two.
A265450
Number of n X n 0..2n-2 arrays with each element differing from its horizontal and vertical neighbors by one or two.
Terms
- a(0) =1a(1) =18a(2) =7422a(3) =13943772a(4) =122895678174
External references
- oeis: A265450