A297660 Number of 7 X n 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1, 2 or 3 neighboring 1's.

1, 5854, 346032, 11089103, 864944851, 65775301075, 3863740405975, 241491673018271, 16106282322466255, 1037330977711576009, 66060513585267380291, 4262867141607164322540, 275167885341459174925030

Offset

1,2

Comments

Row 7 of A297654.

Links

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

Example

Some solutions for n=2
..0..0. .1..1. .0..0. .1..1. .1..1. .1..1. .0..1. .1..0. .1..0. .0..0
..1..0. .1..1. .1..1. .0..0. .1..0. .0..1. .1..0. .0..1. .1..1. .1..1
..0..1. .1..1. .1..0. .0..1. .0..1. .1..1. .1..0. .1..1. .1..1. .1..1
..1..0. .0..1. .1..1. .1..0. .1..1. .1..1. .0..1. .1..0. .1..0. .1..0
..1..1. .1..0. .1..0. .1..1. .1..1. .1..1. .0..1. .1..1. .0..1. .0..0
..1..0. .0..1. .0..1. .1..0. .1..0. .1..0. .1..1. .0..1. .1..1. .1..1
..1..1. .1..0. .0..0. .0..1. .0..1. .0..0. .0..0. .1..0. .1..1. .0..0

Crossrefs

Cf. A297654.

Sequence in context: A280446 A248083 A031830 * A219008 A020416 A345185

Adjacent sequences: A297657 A297658 A297659 * A297661 A297662 A297663

Keyword

nonn

Author

R. H. Hardin, Jan 02 2018

Status

approved