Number of nX3 0..1 arrays with every element unequal to 1, 2, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

A316636

Number of nX3 0..1 arrays with every element unequal to 1, 2, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =16a(2) =43a(3) =122a(4) =404a(5) =1344a(6) =4583a(7) =15737a(8) =53378a(9) =182889a(10) =626144a(11) =2140598a(12) =7328954a(13) =25088547a(14) =85860039a(15) =293920208a(16) =1006105675a(17) =3443828176a(18) =11788522574a(19) =40352683838a(20) =138128383567a(21) =472821164301

External references