A281807 Number of 6Xn 0..1 arrays with no element unequal to a strict majority of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.

0, 194, 2272, 32524, 368408, 4173476, 45696162, 473403162, 4898077436, 49143504252, 486520814815, 4761050383044, 45945604199909, 439730881714722, 4170492590977309, 39248795804453474, 367025592669372327

Offset

1,2

Comments

Row 6 of A281802.

Links

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

Example

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

Crossrefs

Cf. A281802.

Sequence in context: A158224 A205621 A205356 * A220160 A333875 A183583

Adjacent sequences: A281804 A281805 A281806 * A281808 A281809 A281810

Keyword

nonn

Author

R. H. Hardin, Jan 30 2017

Status

approved