A279923 Number of nX4 0..2 arrays with no element equal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.

3, 142, 14281, 1230799, 99427182, 7837914954, 601248781220, 45231133438998, 3348526427263799, 244650217481299630, 17677455777661411625, 1265259778269055650555, 89821449423672575925643

Offset

1,1

Comments

Column 4 of A279925.

Links

R. H. Hardin, Table of n, a(n) for n = 1..58

Example

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

Crossrefs

Cf. A279925.

Sequence in context: A050819 A255190 A037121 * A195937 A162363 A102965

Adjacent sequences: A279920 A279921 A279922 * A279924 A279925 A279926

Keyword

nonn

Author

R. H. Hardin, Dec 23 2016

Status

approved