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A208440 Number of nX3 0..2 arrays with no element equal the average of immediate neighbors vertically above and horizontally left of it 1
12, 134, 1548, 17992, 209542, 2440104, 28421906, 331022604, 3855542052, 44905676830, 523026174520, 6091752735350, 70951709409564, 826385215602400, 9625043438830750, 112104385765338376, 1305697709338151066 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A208445

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

FORMULA

Empirical: a(n) = 8*a(n-1) +50*a(n-2) -117*a(n-3) +429*a(n-4) -1094*a(n-5) +1139*a(n-6) -1687*a(n-7) +1036*a(n-8) -1068*a(n-9) +144*a(n-10) -64*a(n-11) -128*a(n-12)

EXAMPLE

Some solutions for n=4

..2..0..1....2..0..1....2..1..0....2..1..2....2..0..2....2..0..1....2..1..0

..0..1..2....0..1..2....0..1..1....1..2..1....1..1..1....0..1..2....0..1..2

..2..2..0....1..2..0....1..0..2....0..2..1....2..0..0....1..0..2....2..1..1

..0..2..2....0..0..1....2..2..0....1..1..2....1..2..2....2..2..1....0..1..2

CROSSREFS

Sequence in context: A015469 A144785 A214994 * A218762 A199233 A085938

Adjacent sequences:  A208437 A208438 A208439 * A208441 A208442 A208443

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 26 2012

STATUS

approved

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Last modified February 22 12:42 EST 2020. Contains 332136 sequences. (Running on oeis4.)