A297613 Number of 7Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 0, 1 or 3 neighboring 1s.

128, 3082, 137033, 3514058, 115571432, 3567494618, 113592447685, 3519025588702, 110422653990512, 3453254360365771, 108172466148138035, 3383814925896066717, 105919891390233858243, 3314896082160094571696, 103752944799122473808643

Offset

1,1

Comments

Row 7 of A297607.

Links

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

Example

Some solutions for n=3
..1..0..0. .0..1..0. .1..0..0. .0..0..1. .0..0..1. .1..0..1. .1..0..1
..1..0..1. .0..0..0. .0..1..1. .0..1..0. .1..0..1. .0..0..0. .0..0..0
..1..0..1. .0..0..0. .0..0..1. .0..0..0. .1..0..1. .0..0..1. .0..1..0
..1..0..0. .0..0..0. .1..0..1. .0..0..1. .0..0..0. .1..1..0. .0..0..1
..0..1..0. .1..0..1. .1..0..1. .0..0..0. .1..0..0. .0..0..1. .0..0..0
..0..0..0. .1..0..1. .0..0..1. .0..0..1. .0..1..0. .1..0..0. .1..1..1
..1..1..0. .1..1..0. .1..0..0. .1..1..1. .0..1..0. .0..0..0. .1..0..0

Crossrefs

Cf. A297607.

Sequence in context: A224163 A224414 A128802 * A250565 A264383 A022150

Adjacent sequences: A297610 A297611 A297612 * A297614 A297615 A297616

Keyword

nonn

Author

R. H. Hardin, Jan 01 2018

Status

approved