Number of n X n 0..4 arrays with each element equal to the number of its horizontal and vertical neighbors within one of itself.
A196011
Number of n X n 0..4 arrays with each element equal to the number of its horizontal and vertical neighbors within one of itself.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =25a(4) =106a(5) =708a(6) =22711a(7) =670449a(8) =44864449a(9) =5122273171
External references
- oeis: A196011