A299580 Number of nX7 0..1 arrays with every element equal to 0, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

1, 22, 115, 327, 1734, 10646, 61273, 464681, 3999592, 35862058, 347658251, 3451475381, 34916301677, 357255500208, 3672488058713, 37912596453934, 392062006017847, 4059462186702245, 42063250361201544, 436021177108962173

Offset

1,2

Comments

Column 7 of A299581.

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..1. .0..0..0..0..0..0..1. .0..0..0..1..1..0..0
..1..1..1..1..1..1..1. .0..0..0..0..0..0..0. .0..0..0..1..1..0..0
..1..1..1..1..1..1..1. .0..0..0..0..0..0..0. .0..1..0..1..1..0..1
..0..0..0..0..0..0..0. .0..0..0..1..0..0..0. .0..0..0..0..0..0..0
..0..0..1..0..1..0..0. .0..0..0..0..0..0..1. .1..0..1..0..1..0..1

Crossrefs

Cf. A299581.

Sequence in context: A079676 A374026 A074277 * A289350 A100930 A260810

Adjacent sequences: A299577 A299578 A299579 * A299581 A299582 A299583

Keyword

nonn

Author

R. H. Hardin, Feb 13 2018

Status

approved