A297642 Number of 6Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 0, 2 or 3 neighboring 1s.

64, 341, 10587, 109790, 2171757, 36084211, 715726580, 13224204993, 261938528068, 5203999725344, 104668658789888, 2103525884791406, 42565982691388772, 862789155518491293, 17507548215488386765, 355424056605280735400

Offset

1,1

Comments

Row 6 of A297637.

Links

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

Example

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

Crossrefs

Cf. A297637.

Sequence in context: A252080 A017366 A186441 * A061102 A016779 A298220

Adjacent sequences: A297639 A297640 A297641 * A297643 A297644 A297645

Keyword

nonn

Author

R. H. Hardin, Jan 02 2018

Status

approved