A297738 Number of 6Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2 or 4 neighboring 1s.

1, 9, 385, 1443, 11171, 65215, 673171, 4414693, 36515720, 262644855, 2167783248, 16326721009, 130593495719, 1004457623070, 7977094417489, 62076354573565, 490287264598713, 3835365581310001, 30228295038249915, 237124926883181002

Offset

1,2

Comments

Row 6 of A297733.

Links

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

Example

Some solutions for n=6
..0..0..0..1..1..0. .1..1..1..0..1..1. .0..0..0..0..1..0. .0..0..0..1..1..0
..0..1..0..0..1..1. .0..1..0..0..1..1. .0..0..0..1..0..1. .1..1..0..0..1..1
..1..1..1..0..0..0. .0..0..0..1..0..1. .0..0..0..1..1..0. .1..1..0..0..0..0
..0..0..0..0..0..0. .1..1..0..0..1..0. .0..1..1..0..0..1. .0..0..0..1..1..1
..0..0..1..0..0..0. .1..1..0..1..1..1. .1..1..0..1..1..0. .1..1..0..1..1..1
..0..1..1..1..0..0. .0..0..0..0..0..0. .0..0..0..0..0..0. .1..1..0..0..0..0

Crossrefs

Cf. A297733.

Sequence in context: A157593 A157602 A124042 * A225988 A012191 A012078

Adjacent sequences: A297735 A297736 A297737 * A297739 A297740 A297741

Keyword

nonn

Author

R. H. Hardin, Jan 04 2018

Status

approved