A297636 Number of nX7 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 0, 2 or 3 neighboring 1s.

34, 1641, 28645, 771393, 25139952, 715726580, 21730243952, 681285029028, 21128576143262, 661069112053374, 20793480522963486, 653892513657033970, 20591303152338303577, 649029919565842403666, 20460828767193262987356

Offset

1,1

Comments

Column 7 of A297637.

Links

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

Example

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

Crossrefs

Cf. A297637.

Sequence in context: A296587 A212735 A123790 * A212033 A202297 A296673

Adjacent sequences: A297633 A297634 A297635 * A297637 A297638 A297639

Keyword

nonn

Author

R. H. Hardin, Jan 02 2018

Status

approved