Number of nX6 0..1 arrays with no 1 equal to more than three of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly two elements.
A283520
Number of nX6 0..1 arrays with no 1 equal to more than three of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly two elements.
Terms
- a(0) =0a(1) =145a(2) =26662a(3) =2032993a(4) =136572268a(5) =8593156813a(6) =510843580504
External references
- oeis: A283520