Number of nX7 0..1 arrays with every element unequal to 1, 2, 5 or 8 king-move adjacent elements, with upper left element zero.

A304301

Number of nX7 0..1 arrays with every element unequal to 1, 2, 5 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =8a(1) =22a(2) =22a(3) =43a(4) =339a(5) =685a(6) =2673a(7) =11690a(8) =31390a(9) =133744a(10) =470762a(11) =1540068a(12) =6102146a(13) =20842217a(14) =73878439a(15) =275427095a(16) =956546292a(17) =3458032571a(18) =12531328029a(19) =44267349424a(20) =160026929357a(21) =574345404117

External references