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

A297946

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

Terms

    a(0) =1a(1) =18a(2) =56a(3) =219a(4) =796a(5) =3079a(6) =11614a(7) =44076a(8) =167210a(9) =635033a(10) =2409994a(11) =9147953a(12) =34722997a(13) =131802284a(14) =500289672a(15) =1898992405a(16) =7208159665a(17) =27360619128a(18) =103854959332a(19) =394210908018

External references