Number of nX5 0..1 arrays with every element equal to 1, 2, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

A299609

Number of nX5 0..1 arrays with every element equal to 1, 2, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =3a(1) =23a(2) =23a(3) =85a(4) =179a(5) =453a(6) =1006a(7) =2523a(8) =6002a(9) =14802a(10) =36299a(11) =87591a(12) =214486a(13) =522937a(14) =1275628a(15) =3120041a(16) =7614933a(17) =18586581a(18) =45384416a(19) =110821038a(20) =270585507a(21) =660827950a(22) =1613737854a(23) =3940683638a(24) =9622959317a(25) =23498981429a(26) =57383159995a(27) =140126697433

External references