A297718 - OEIS

A297718

Number of nX6 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1, 2 or 4 neighboring 1s.

21, 865, 14462, 336653, 8103241, 183324631, 4238895126, 98184350818, 2265008802005, 52325664406022, 1208931244861130, 27923747107250179, 645039373054891828, 14900511436264593319, 344198253865046283579

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Column 6 of A297720.

LINKS

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

EXAMPLE

Some solutions for n=3

..0..0..0..1..0..0. .1..1..0..0..1..1. .0..0..1..0..1..0. .0..1..0..0..0..1

..1..0..1..0..1..1. .0..0..0..1..0..0. .0..1..1..0..0..1. .1..0..0..1..1..1

..1..1..1..0..0..0. .1..1..0..0..0..0. .1..0..1..0..0..0. .0..0..0..0..0..1

CROSSREFS

Cf. A297720.

Sequence in context: A366301 A119414 A012819 * A296384 A296641 A295038

Adjacent sequences: A297715 A297716 A297717 * A297719 A297720 A297721

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 04 2018

STATUS

approved