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A222374
Number of nX3 0..3 arrays with no more than floor(nX3/2) elements unequal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..3 order
1
1, 5, 9, 118, 498, 8111, 37107, 676485, 3140167, 58995438, 275054103, 5223616489, 24395423052, 466212749842, 2180168118272, 41855166855421, 195981171753608, 3775984650279490, 17703134058396750, 342076192235557748
OFFSET
1,2
COMMENTS
Column 3 of A222378
LINKS
EXAMPLE
Some solutions for n=4
..0..1..0....0..0..0....0..0..1....0..0..0....0..0..0....0..0..1....0..0..0
..0..0..0....1..0..0....2..2..2....0..0..0....0..0..0....1..1..1....0..0..0
..0..0..0....1..1..1....2..2..2....0..0..1....1..0..0....1..1..1....0..1..0
..0..0..0....1..1..1....2..2..2....0..0..1....1..0..0....1..1..1....1..0..0
CROSSREFS
Sequence in context: A280642 A359396 A222583 * A097397 A092584 A145400
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 17 2013
STATUS
approved