A279532 Number of nX4 0..2 arrays with no element equal 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.

3, 222, 21430, 1585524, 102868091, 6167352480, 349780411336, 19062177795838, 1007616539609274, 51997487569586344, 2631612786536215243, 131063643235639546758, 6439858597414624470206, 312802056435357403343004

Offset

1,1

Comments

Column 4 of A279534.

Links

R. H. Hardin, Table of n, a(n) for n = 1..65

Example

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

Crossrefs

Cf. A279534.

Sequence in context: A261385 A071881 A157557 * A157582 A241098 A254157

Adjacent sequences: A279529 A279530 A279531 * A279533 A279534 A279535

Keyword

nonn

Author

R. H. Hardin, Dec 14 2016

Status

approved