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A209012 Number of n X n 0..3 arrays with no element equal the average of immediate neighbors vertically above, diagonally above and left, and horizontally left of it 0
4, 130, 57412, 337083370, 26361689168962, 27444816617702590210, 380386826513820237531618354, 70188235698940395931354096660136964, 172416055686564260854366909730038107238333862 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A209019

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

Some solutions for n=4

..2..3..1..0....1..2..1..3....2..3..1..3....1..3..2..1....0..1..2..3

..3..2..3..0....3..3..3..0....3..2..1..1....2..1..0..3....1..3..3..0

..2..3..3..0....0..3..1..1....0..2..0..1....3..3..3..0....2..0..1..2

..1..3..0..2....3..1..0..0....1..3..3..1....0..3..1..3....1..2..0..0

CROSSREFS

Sequence in context: A299367 A299931 A006103 * A003371 A113253 A201977

Adjacent sequences:  A209009 A209010 A209011 * A209013 A209014 A209015

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 04 2012

STATUS

approved

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Last modified November 17 18:55 EST 2018. Contains 317276 sequences. (Running on oeis4.)