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A208791
Number of nX3 0..2 arrays with no element equal the average of immediate neighbors vertically above, diagonally above and left, and horizontally left of it
1
12, 160, 2284, 32446, 461280, 6557958, 93227592, 1325375622, 18841850112, 267863199566, 3808028293448, 54136282267542, 769619639908176, 10941178835048766, 155543535899731032, 2211260341782871974
OFFSET
1,1
COMMENTS
Column 3 of A208796
LINKS
FORMULA
Empirical: a(n) = 4*a(n-1) +123*a(n-2) +332*a(n-3) -170*a(n-4) -796*a(n-5) +124*a(n-6) +464*a(n-7) -88*a(n-8) -16*a(n-9)
EXAMPLE
Some solutions for n=4
..0..1..0....2..1..0....1..2..1....2..0..1....0..1..2....2..1..2....2..0..1
..2..0..2....0..2..2....2..1..1....0..0..2....1..2..0....1..2..1....0..0..2
..0..0..1....1..0..2....1..0..1....2..0..0....0..2..0....0..2..1....1..0..2
..1..0..0....2..2..2....2..2..2....1..0..1....2..0..1....1..2..2....2..2..1
CROSSREFS
Sequence in context: A355844 A219418 A098400 * A019578 A144346 A167558
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 01 2012
STATUS
approved