A280397 Number of nX7 0..2 arrays with no element unequal to a strict majority of its horizontal and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.

36, 158, 7440, 388686, 18736311, 874372050, 39877186802, 1785907191220, 78870855453277, 3444569084276494, 149070940550252478, 6402525766461308426, 273223888032122659020, 11595632519907543615784, 489776602503009888381042

Offset

1,1

Comments

Column 7 of A280398.

Links

R. H. Hardin, Table of n, a(n) for n = 1..26

Example

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

Crossrefs

Cf. A280398.

Sequence in context: A250633 A211759 A064244 * A064500 A264474 A338390

Adjacent sequences: A280394 A280395 A280396 * A280398 A280399 A280400

Keyword

nonn

Author

R. H. Hardin, Jan 02 2017

Status

approved