Number of 3 X n binary arrays with top left element equal to 1 and no two ones adjacent horizontally or nw-se.

A228798

Number of 3 X n binary arrays with top left element equal to 1 and no two ones adjacent horizontally or nw-se.

Terms

    a(0) =4a(1) =5a(2) =36a(3) =97a(4) =411a(5) =1394a(6) =5223a(7) =18708a(8) =68348a(9) =247545a(10) =899960a(11) =3266477a(12) =11864371a(13) =43080054a(14) =156446379a(15) =568106600a(16) =2063027108a(17) =7491613757a(18) =27204943788a(19) =98791463513a(20) =358749562651

External references