Number of n X 9 binary arrays with all 1s connected, all corners 1, and no 1 having more than two 1s adjacent.

A163740

Number of n X 9 binary arrays with all 1s connected, all corners 1, and no 1 having more than two 1s adjacent.

Terms

    a(0) =1a(1) =26a(2) =473a(3) =2589a(4) =17897a(5) =146347a(6) =1820644a(7) =23161070a(8) =269920167a(9) =2887094703a(10) =29307800058a(11) =290289164778

External references