Number of nX3 0..1 arrays with every element unequal to 0, 1, 3, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

A317261

Number of nX3 0..1 arrays with every element unequal to 0, 1, 3, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =3a(1) =7a(2) =10a(3) =21a(4) =46a(5) =91a(6) =186a(7) =409a(8) =892a(9) =1931a(10) =4236a(11) =9363a(12) =20792a(13) =46525a(14) =104832a(15) =237487a(16) =540898a(17) =1238373a(18) =2848246a(19) =6577977a(20) =15248530a(21) =35464687a(22) =82722630a(23) =193446597a(24) =453383480a(25) =1064658303a(26) =2504274032a(27) =5899032191a(28) =13912945708a(29) =32848848465

External references