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A223131 Number of 6Xn 0..2 arrays with no more than floor(6Xn/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..2 order 0
122, 47968, 18539512, 7157970340, 2785187722316, 1092037282618789, 431398785877769642, 171546088917546382811, 68597654261623347505569, 27560231488082950954805851 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 6 of A223126

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=3

..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0

..0..1..0....0..0..1....0..0..1....0..1..0....0..0..0....0..1..0....0..1..0

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

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

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

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

CROSSREFS

Sequence in context: A233080 A280678 A209105 * A208256 A198714 A199653

Adjacent sequences:  A223128 A223129 A223130 * A223132 A223133 A223134

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 15 2013

STATUS

approved

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Last modified September 29 06:49 EDT 2022. Contains 357082 sequences. (Running on oeis4.)