Half the number of (n+2)X10 binary arrays with each 3X3 subblock having sum 4 or 5.

A186824

Half the number of (n+2)X10 binary arrays with each 3X3 subblock having sum 4 or 5.

Terms

    a(0) =8730234a(1) =390661554a(2) =15639380661a(3) =676967599202

External references