A302526 Number of nX6 0..1 arrays with every element equal to 1, 2, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

5, 45, 290, 1977, 23909, 182773, 1551340, 18089458, 155010391, 1441103898, 14993036510, 137595549895, 1311553678481, 12995883033340, 122771875897789, 1178882157960810, 11465157388913564, 109566686589917765

Offset

1,1

Comments

Column 6 of A302528.

Links

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

Example

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

Crossrefs

Cf. A302528.

Sequence in context: A269911 A249638 A188349 * A303408 A241275 A343136

Adjacent sequences: A302523 A302524 A302525 * A302527 A302528 A302529

Keyword

nonn

Author

R. H. Hardin, Apr 09 2018

Status

approved