A302807 Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 3 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

64, 5135, 154494, 5396562, 192211013, 6769884156, 238687785290, 8434497360938, 297820640670676, 10516667144805042, 371418358544006233, 13116960409103691843, 463238817838530130977, 16359920350061929110887

Offset

1,1

Comments

Column 7 of A302808.

Links

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

Example

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

Crossrefs

Cf. A302808.

Sequence in context: A058874 A302264 A302964 * A303468 A220578 A067821

Adjacent sequences: A302804 A302805 A302806 * A302808 A302809 A302810

Keyword

nonn

Author

R. H. Hardin, Apr 13 2018

Status

approved