A297754 Number of 6Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1, 3 or 4 neighboring 1s.

1, 123, 4344, 29773, 290114, 6379211, 116064732, 1513886975, 21770613982, 360581868887, 5740308678921, 86254442205268, 1321260365864919, 20730220196496664, 322671941879842897, 4973758804599559075

Offset

1,2

Comments

Row 6 of A297749.

Links

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

Example

Some solutions for n=4
..0..1..1..1. .1..0..1..0. .0..0..0..1. .0..1..1..1. .1..0..1..0
..0..0..0..1. .1..1..1..0. .0..0..1..0. .0..1..0..0. .0..1..1..0
..0..0..0..0. .0..0..0..0. .1..0..0..0. .0..0..0..0. .0..0..0..0
..0..0..1..0. .0..0..0..0. .1..1..0..0. .0..1..0..0. .1..0..0..1
..0..0..1..1. .1..0..1..0. .1..0..0..0. .0..0..1..1. .1..1..1..0
..0..0..1..0. .1..1..0..0. .0..0..1..1. .0..1..0..0. .1..0..0..1

Crossrefs

Cf. A297749.

Sequence in context: A297524 A163711 A293309 * A068239 A098683 A324435

Adjacent sequences: A297751 A297752 A297753 * A297755 A297756 A297757

Keyword

nonn

Author

R. H. Hardin, Jan 05 2018

Status

approved