Number of nX3 0..1 arrays with every element equal to 1, 2, 3 or 4 king-move adjacent elements, with upper left element zero.

A297918

Number of nX3 0..1 arrays with every element equal to 1, 2, 3 or 4 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =17a(2) =109a(3) =588a(4) =3276a(5) =18451a(6) =103558a(7) =581318a(8) =3263838a(9) =18323588a(10) =102871721a(11) =577541657a(12) =3242423256a(13) =18203555673a(14) =102198092227a(15) =573758755891

External references