Number of n X 3 binary arrays with all 1s connected, a path of 1s from top row to lower right corner, and no 1 having more than two 1s adjacent.

A163696

Number of n X 3 binary arrays with all 1s connected, a path of 1s from top row to lower right corner, and no 1 having more than two 1s adjacent.

Terms

    a(0) =3a(1) =11a(2) =28a(3) =63a(4) =138a(5) =298a(6) =642a(7) =1371a(8) =2908a(9) =6146a(10) =12970a(11) =27351a(12) =57654a(13) =121502a(14) =256026a(15) =539459a(16) =1136632a(17) =2394830a(18) =5045754a(19) =10631039a(20) =22398786a(21) =47192482a(22) =99430802a(23) =209492731a(24) =441384340a(25) =929961258a(26) =1959353418a(27) =4128199671a(28) =8697783790a(29) =18325528950

External references