Half the number of n X n 0..3 arrays with no element equal to the average of its horizontal and vertical neighbors.
A197101
Half the number of n X n 0..3 arrays with no element equal to the average of its horizontal and vertical neighbors.
Terms
- a(0) =2a(1) =78a(2) =50831a(3) =478107878
External references
- oeis: A197101