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A222568
Number of nX3 0..2 arrays with no more than floor(nX3/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..2 order
5
1, 5, 11, 120, 500, 5210, 20889, 229894, 913405, 10427244, 40896923, 479942958, 1866795781, 22316526370, 86377362833, 1045093746614, 4036724271985, 49216523120074, 190041618262033, 2328483132653366, 8997015510376997
OFFSET
1,2
COMMENTS
Column 3 of A222573
LINKS
EXAMPLE
Some solutions for n=3
..0..1..0....0..0..0....0..1..1....0..1..2....0..0..0....0..0..1....0..0..0
..1..1..1....0..0..0....1..1..1....1..1..1....0..0..1....0..0..0....1..0..0
..1..1..1....0..0..0....1..1..1....1..1..1....0..0..0....0..0..0....0..0..0
CROSSREFS
Sequence in context: A041909 A041048 A354022 * A248253 A262309 A266421
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 25 2013
STATUS
approved