Number of n X n binary arrays with all 1's connected and no 1 having more than two 1's adjacent.
A391821
Number of n X n binary arrays with all 1's connected and no 1 having more than two 1's adjacent.
Terms
- a(0) =1a(1) =13a(2) =108a(3) =1044a(4) =15118a(5) =338008a(6) =11612695a(7) =631125163a(8) =56172850171
External references
- oeis: A391821