A303408 Number of nX6 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.

5, 45, 290, 2079, 29411, 236326, 2158662, 27002794, 250400003, 2506366395, 27764556264, 275534182736, 2826711225139, 29909224594535, 304574137026271, 3144849018260079, 32756776290370113, 336779681669267253

Offset

1,1

Comments

Column 6 of A303410.

Links

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

Example

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

Crossrefs

Cf. A303410.

Sequence in context: A249638 A188349 A302526 * A241275 A343136 A343106

Adjacent sequences: A303405 A303406 A303407 * A303409 A303410 A303411

Keyword

nonn

Author

R. H. Hardin, Apr 23 2018

Status

approved