A303407 Number of nX5 0..1 arrays with every element equal to 1, 2, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

3, 27, 100, 547, 4013, 21361, 115770, 803911, 4667376, 27684643, 182192785, 1120872960, 6916763577, 44766799474, 282088259954, 1776639929407, 11435967743483, 72802740854480, 463125006110247, 2975736132751591

Offset

1,1

Comments

Column 5 of A303410.

Links

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

Example

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

Crossrefs

Cf. A303410.

Sequence in context: A343105 A200977 A302525 * A173491 A195799 A297662

Adjacent sequences: A303404 A303405 A303406 * A303408 A303409 A303410

Keyword

nonn

Author

R. H. Hardin, Apr 23 2018

Status

approved