A297693 Number of nX7 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 0, 2 or 4 neighboring 1s.

34, 1216, 16931, 378611, 8377550, 165522511, 3487451085, 73143230512, 1513232424936, 31582139334118, 658460204051875, 13706009242381030, 285633419187642435, 5951469700723156803, 123981619727666622855

Offset

1,1

Comments

Column 7 of A297694.

Links

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

Example

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

Crossrefs

Cf. A297694.

Sequence in context: A167258 A251924 A158731 * A093550 A296587 A212735

Adjacent sequences: A297690 A297691 A297692 * A297694 A297695 A297696

Keyword

nonn

Author

R. H. Hardin, Jan 03 2018

Status

approved