Number of n X 2 0..1 arrays with no 1 adjacent to 1 king-move neighboring 1.

A297067

Number of n X 2 0..1 arrays with no 1 adjacent to 1 king-move neighboring 1.

Terms

    a(0) =3a(1) =10a(2) =32a(3) =103a(4) =350a(5) =1201a(6) =4143a(7) =14353a(8) =49844a(9) =173276a(10) =602727a(11) =2097232a(12) =7298725a(13) =25403085a(14) =88419267a(15) =307764514a(16) =1071262948a(17) =3728865871a(18) =12979534274a(19) =45179596085a(20) =157262816291a(21) =547406567737

External references