A305507 Number of nX6 0..1 arrays with every element unequal to 2, 3, 4, 6 or 8 king-move adjacent elements, with upper left element zero.

0, 209, 464, 10182, 101912, 1126154, 13419832, 155294889, 1779735908, 20787421456, 240404798165, 2785733460032, 32316684221838, 374520718369338, 4341656074660714, 50335182498171381, 583493054961493312

Offset

1,2

Comments

Column 6 of A305509.

Links

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

Example

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

Crossrefs

Cf. A305509.

Sequence in context: A064906 A337778 A304154 * A211672 A250780 A305173

Adjacent sequences: A305504 A305505 A305506 * A305508 A305509 A305510

Keyword

nonn

Author

R. H. Hardin, Jun 03 2018

Status

approved