A279870 Number of nX6 0..2 arrays with no element unequal to a strict majority of its horizontal and vertical neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.

30, 610, 11983, 226118, 3786373, 59485548, 887774030, 12785911872, 178956329859, 2449659253722, 32922293647257, 435782154193602, 5694447390415947

Offset

1,1

Comments

Column 6 of A279871.

Links

Table of n, a(n) for n=1..13.

Example

Some solutions for n=3
..0..0..0..0..1..1. .0..0..0..0..1..1. .0..0..1..1..1..1. .0..1..1..1..2..2
..0..0..2..0..1..1. .0..0..0..0..0..0. .0..1..1..2..2..1. .0..0..1..1..2..2
..0..0..2..2..2..2. .0..1..0..0..0..0. .0..1..1..2..2..2. .0..0..1..1..1..2

Crossrefs

Cf. A279871.

Sequence in context: A051303 A020975 A277877 * A124099 A028258 A285235

Adjacent sequences: A279867 A279868 A279869 * A279871 A279872 A279873

Keyword

nonn

Author

R. H. Hardin, Dec 21 2016

Status

approved