Number of nX3 0..1 arrays with every element equal to 1, 2, 4, 5 or 7 king-move adjacent elements, with upper left element zero.

A298577

Number of nX3 0..1 arrays with every element equal to 1, 2, 4, 5 or 7 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =7a(2) =15a(3) =25a(4) =47a(5) =113a(6) =261a(7) =601a(8) =1397a(9) =3223a(10) =7501a(11) =17523a(12) =40935a(13) =95683a(14) =223799a(15) =523857a(16) =1226779a(17) =2873985a(18) =6734933a(19) =15786173a(20) =37008905a(21) =86776771a(22) =203494869a(23) =477250155a(24) =1119367539a(25) =2625588427a(26) =6158890175a(27) =14447602189a(28) =33892459607a(29) =79509969725

External references