A298773 Number of nX6 0..1 arrays with every element equal to 1, 2, 4, 5 or 8 king-move adjacent elements, with upper left element zero.

5, 49, 109, 779, 2603, 11320, 61333, 284618, 1376511, 6959439, 34511708, 170670413, 851900683, 4250558598, 21161145459, 105481131616, 526133966100, 2623203957029, 13078950820473, 65224465637861, 325269426017123

Offset

1,1

Comments

Column 6 of A298775.

Links

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

Example

Some solutions for n=7
..0..1..0..0..1..0. .0..1..0..0..0..0. .0..1..1..1..0..1. .0..1..0..1..0..0
..1..0..0..0..0..1. .1..0..0..0..0..1. .1..0..0..0..1..1. .1..0..0..1..0..1
..0..1..1..1..1..0. .0..1..1..1..1..0. .1..0..0..0..1..1. .1..0..0..0..1..0
..0..1..1..1..1..0. .0..1..1..1..1..0. .1..0..0..0..1..0. .0..1..1..1..0..1
..0..1..1..1..1..0. .0..1..1..1..1..0. .0..1..1..1..0..1. .0..1..1..1..0..0
..0..1..1..1..1..0. .1..0..0..0..0..1. .1..1..1..0..1..0. .0..1..1..1..0..0
..1..0..0..0..0..1. .0..0..0..0..0..0. .0..0..1..0..1..1. .1..0..0..0..1..0

Crossrefs

Cf. A298775.

Sequence in context: A299610 A079837 A297957 * A298580 A299572 A266127

Adjacent sequences: A298770 A298771 A298772 * A298774 A298775 A298776

Keyword

nonn

Author

R. H. Hardin, Jan 26 2018

Status

approved