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A184455 1/36 the number of (n+2)X9 0..2 arrays with each 3X3 subblock containing two of one value, two of another, and five of the last 0
203391, 216477, 232326, 253176, 309042, 413100, 660654 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A184457

LINKS

Table of n, a(n) for n=1..7.

EXAMPLE

Some solutions with a(1,1)=0 for 4X9

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

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

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

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

CROSSREFS

Sequence in context: A290505 A205891 A186532 * A210017 A176167 A248203

Adjacent sequences:  A184452 A184453 A184454 * A184456 A184457 A184458

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 14 2011

STATUS

approved

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Last modified September 25 12:03 EDT 2020. Contains 337343 sequences. (Running on oeis4.)