Number of n X 2 binary arrays with all 1s connected and a path of 1s from left column to right column.

A163037

Number of n X 2 binary arrays with all 1s connected and a path of 1s from left column to right column.

Terms

    a(0) =1a(1) =7a(2) =28a(3) =88a(4) =245a(5) =639a(6) =1608a(7) =3968a(8) =9689a(9) =23527a(10) =56964a(11) =137720a(12) =332717a(13) =803519a(14) =1940176a(15) =4684352a(16) =11309425a(17) =27303815a(18) =65917740a(19) =159140056a(20) =384198693a(21) =927538367a(22) =2239276440a(23) =5406092352a(24) =13051462345a(25) =31509018343a(26) =76069500436a(27) =183648020728a(28) =443365543517

External references