Number of nX3 0..1 arrays with every element unequal to 0, 1, 2, 4, 6 or 8 king-move adjacent elements, with upper left element zero.

A316299

Number of nX3 0..1 arrays with every element unequal to 0, 1, 2, 4, 6 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =4a(1) =12a(2) =20a(3) =39a(4) =110a(5) =245a(6) =572a(7) =1384a(8) =3267a(9) =7767a(10) =18500a(11) =43949a(12) =104584a(13) =248880a(14) =591971a(15) =1408452a(16) =3351213a(17) =7973189a(18) =18970293a(19) =45135581a(20) =107389830a(21) =255510579a(22) =607930774a(23) =1446436781a(24) =3441480653a(25) =8188250475a(26) =19482148534a(27) =46353514855a(28) =110288063427

External references