Half the number of (n+2)X5 binary arrays with each 3X3 subblock having sum 4 or 5.
A186819
Half the number of (n+2)X5 binary arrays with each 3X3 subblock having sum 4 or 5.
Terms
- a(0) =2904a(1) =25808a(2) =222632a(3) =2009622a(4) =18829218a(5) =175882357a(6) =1653336285a(7) =15639380661a(8) =147826932337
External references
- oeis: A186819