Number of nX3 0..1 arrays with every element unequal to 0, 2, 3, 4 or 7 king-move adjacent elements, with upper left element zero.

A304889

Number of nX3 0..1 arrays with every element unequal to 0, 2, 3, 4 or 7 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =8a(2) =11a(3) =40a(4) =94a(5) =291a(6) =776a(7) =2269a(8) =6275a(9) =17985a(10) =50548a(11) =143589a(12) =405620a(13) =1149709a(14) =3252139a(15) =9211083a(16) =26070305a(17) =73816122a(18) =208963020a(19) =591618663a(20) =1674877081a(21) =4741816884a(22) =13424434567a(23) =38006135552a(24) =107599067346a(25) =304624934972

External references