Number of n X n binary arrays with every 1 adjacent to at least one other 1, but at most one 1 adjacent horizontally and at most one 1 adjacent vertically.
A144052
Number of n X n binary arrays with every 1 adjacent to at least one other 1, but at most one 1 adjacent horizontally and at most one 1 adjacent vertically.
Terms
- a(0) =1a(1) =10a(2) =67a(3) =1859a(4) =144973a(5) =23675451a(6) =10663538347
External references
- oeis: A144052