Number of nX5 0..1 arrays with every element unequal to 2, 3, 5 or 7 king-move adjacent elements, with upper left element zero.

A304260

Number of nX5 0..1 arrays with every element unequal to 2, 3, 5 or 7 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =0a(1) =18a(2) =17a(3) =47a(4) =116a(5) =230a(6) =772a(7) =1832a(8) =5500a(9) =15852a(10) =43779a(11) =127396a(12) =365026a(13) =1043534a(14) =2996686a(15) =8607783a(16) =24658257a(17) =70781079a(18) =203294560a(19) =583065421a(20) =1673869969a(21) =4805473675a(22) =13792054243a(23) =39590426728a(24) =113650893401a(25) =326237378540

External references