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A279525
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 one element, and with new values introduced in order 0 sequentially upwards.
1
4, 384, 23610, 1280440, 66239560, 3300066400, 160408991208, 7651924962192, 359787825135858, 16723319831529660, 770060247050797618, 35183712290420295428, 1596986555678135067900, 72080322350712846684652
OFFSET
1,1
COMMENTS
Column 4 of A279527.
LINKS
EXAMPLE
Some solutions for n=3
..0..1..0..0. .0..0..0..1. .0..1..0..1. .0..0..1..1. .0..1..0..2
..2..0..0..1. .2..2..1..2. .2..2..1..1. .2..2..1..0. .2..1..2..2
..1..0..1..0. .1..2..0..1. .0..2..0..0. .1..0..0..2. .1..2..1..1
CROSSREFS
Cf. A279527.
Sequence in context: A292195 A154569 A038015 * A003753 A193130 A006237
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 14 2016
STATUS
approved