A303512 Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

64, 960, 9367, 222205, 5122419, 104285205, 2346396384, 53305999504, 1176790967846, 26406239839389, 594228391498452, 13296124650266098, 298383751528089406, 6701075635866431148, 150325174488061644815

Offset

1,1

Comments

Column 7 of A303513.

Links

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

Example

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

Crossrefs

Cf. A303513.

Sequence in context: A302321 A303015 A302819 * A000818 A220678 A224162

Adjacent sequences: A303509 A303510 A303511 * A303513 A303514 A303515

Keyword

nonn

Author

R. H. Hardin, Apr 25 2018

Status

approved