Number of nX3 0..1 arrays with every element equal to 1, 2, 3, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

A299460

Number of nX3 0..1 arrays with every element equal to 1, 2, 3, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =18a(2) =57a(3) =226a(4) =861a(5) =3432a(6) =13268a(7) =51790a(8) =202533a(9) =791520a(10) =3091948a(11) =12082943a(12) =47217580a(13) =184509929a(14) =721007054a(15) =2817499893a(16) =11009995373a(17) =43023947508a(18) =168125545744a(19) =656987671438

External references