A303252 Number of nX6 0..1 arrays with every element equal to 1, 2, 3, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

5, 537, 4556, 78679, 1218385, 19457754, 306224454, 4895684572, 77683246701, 1234426654421, 19631272724800, 312041675243059, 4960178416591981, 78856852121294934, 1253577822147874492, 19928141716104516026

Offset

1,1

Comments

Column 6 of A303254.

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

Crossrefs

Cf. A303254.

Sequence in context: A302222 A302668 A302470 * A112900 A259463 A241802

Adjacent sequences: A303249 A303250 A303251 * A303253 A303254 A303255

Keyword

nonn

Author

R. H. Hardin, Apr 20 2018

Status

approved