Number of n X n binary arrays with all ones connected only in a 2X2 block with tail 1,1 1,2 1,3 2,2 2,3 in any orientation.
A146046
Number of n X n binary arrays with all ones connected only in a 2X2 block with tail 1,1 1,2 1,3 2,2 2,3 in any orientation.
Terms
- a(0) =1a(1) =1a(2) =17a(3) =57a(4) =781a(5) =24351a(6) =931801a(7) =62200649a(8) =8963823755
External references
- oeis: A146046