Number of n X n 0..1 arrays with no 1 equal to more than one of its horizontal and vertical neighbors, with the exception of exactly two elements.
A283093
Number of n X n 0..1 arrays with no 1 equal to more than one of its horizontal and vertical neighbors, with the exception of exactly two elements.
Terms
- a(0) =0a(1) =0a(2) =72a(3) =8536a(4) =2231690a(5) =1354321470
External references
- oeis: A283093