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A222826
Number of nX3 0..3 arrays with no more than floor(nX3/2) elements equal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..3 order
1
2, 80, 2695, 163059, 4990235, 324288311, 10170499564, 674288738013, 21373928441126, 1435823246721009, 45884479727848365, 3108101397467123619, 99916343889082020272, 6807459787910922090689, 219837420324993531866814
OFFSET
1,1
COMMENTS
Column 3 of A222828
LINKS
EXAMPLE
Some solutions for n=3
..0..1..2....0..1..1....0..1..2....0..1..2....0..1..2....0..1..2....0..1..2
..1..3..1....2..2..0....2..3..0....1..3..0....2..1..3....0..3..1....3..3..1
..2..1..3....0..3..2....0..3..0....2..0..1....3..0..1....2..3..0....0..2..0
CROSSREFS
Sequence in context: A371151 A195000 A073499 * A123828 A260659 A351854
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 06 2013
STATUS
approved