A297549 Number of 6Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2 or 3 neighboring 1s.

1, 31, 2050, 13248, 94647, 3015179, 67372651, 916902295, 14467301940, 290169660945, 5329084696567, 89381913856892, 1564002749882255, 28438920688062707, 506516973635082252, 8886666042271930829

Offset

1,2

Comments

Row 6 of A297544.

Links

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

Example

Some solutions for n=5
..0..1..1..0..0. .0..1..0..0..0. .0..0..1..1..0. .0..0..1..1..0
..0..0..1..1..0. .1..1..1..0..0. .0..1..1..0..0. .0..1..1..0..0
..1..1..0..0..0. .0..1..0..0..0. .0..0..1..1..0. .0..1..1..0..0
..0..1..1..0..0. .1..1..0..0..0. .0..0..0..1..0. .1..0..0..0..0
..0..0..1..0..0. .1..1..1..0..0. .0..0..0..1..1. .0..1..0..1..1
..0..1..1..1..0. .0..0..0..0..0. .0..0..1..1..0. .0..0..1..1..1

Crossrefs

Cf. A297544.

Sequence in context: A042860 A184488 A218352 * A292706 A212156 A297806

Adjacent sequences: A297546 A297547 A297548 * A297550 A297551 A297552

Keyword

nonn

Author

R. H. Hardin, Dec 31 2017

Status

approved