A297807 - OEIS

A297807

Number of 7 X n 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2, 3 or 5 neighboring 1's.

1, 69, 10287, 104985, 2174696, 91376524, 3420197908, 94927605755, 2945816737574, 99198658175214, 3238876596856894, 102656828606240489, 3303272683839553667, 107246494100102584720, 3463595416929051369500, 111526884982514579379392

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

OFFSET

1,2

COMMENTS

Row 7 of A297802.

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

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

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

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

CROSSREFS

Cf. A297802.

Sequence in context: A049000 A234824 A232719 * A251002 A194612 A297768

Adjacent sequences: A297804 A297805 A297806 * A297808 A297809 A297810

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 06 2018

STATUS

approved