A305528 Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 3, 4 or 6 king-move adjacent elements, with upper left element zero.

32, 1576, 26000, 506359, 9599897, 180860170, 3433486971, 65111777047, 1233566348589, 23389104641408, 443405789886680, 8405362397863385, 159346410605297094, 3020798825901559158, 57266233957263875494

Offset

1,1

Comments

Column 6 of A305530.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=5
..0..0..1..1..1..1. .0..1..0..0..1..1. .0..0..1..0..0..1. .0..0..0..1..0..0
..0..0..0..0..1..1. .0..0..1..1..1..1. .0..0..0..1..1..1. .0..0..0..0..1..0
..0..0..0..1..1..0. .0..0..1..1..0..0. .0..0..0..0..0..1. .0..0..0..0..0..1
..0..0..0..1..1..0. .0..0..1..1..0..1. .0..0..0..0..0..0. .0..0..1..0..0..0
..0..0..0..0..1..0. .0..0..1..1..1..1. .0..0..0..0..0..0. .0..1..0..1..0..0

Crossrefs

Cf. A305530.

Sequence in context: A316181 A305767 A317116 * A317002 A316820 A317570

Adjacent sequences: A305525 A305526 A305527 * A305529 A305530 A305531

Keyword

nonn

Author

R. H. Hardin, Jun 04 2018

Status

approved