A301398 Number of nX6 0..1 arrays with every element equal to 2, 3, 4, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

0, 19, 156, 2619, 49325, 885003, 16325745, 299552320, 5507220522, 101241811692, 1861266294856, 34219577018840, 629127370642307, 11566583462993881, 212652959829786846, 3909650837047832782, 71879414458502966455

Offset

1,2

Comments

Column 6 of A301400.

Links

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

Example

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

Crossrefs

Cf. A301400.

Sequence in context: A254142 A107891 A302352 * A141923 A261791 A302124

Adjacent sequences: A301395 A301396 A301397 * A301399 A301400 A301401

Keyword

nonn

Author

R. H. Hardin, Mar 20 2018

Status

approved