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A205412 Number of (n+2)X7 0..2 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically or nw-to-se diagonally exactly two ways, and new values 0..2 introduced in row major order 0
1820215, 64878898, 2553087985, 67792717447, 2520131261396, 98445276297551, 3148208484619590, 113563473572336662, 4281011039064902788 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A205415

LINKS

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

EXAMPLE

Some solutions for n=3

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

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

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

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

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

CROSSREFS

Sequence in context: A145537 A183735 A147525 * A249211 A244074 A204951

Adjacent sequences:  A205409 A205410 A205411 * A205413 A205414 A205415

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 26 2012

STATUS

approved

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Last modified May 19 15:03 EDT 2022. Contains 353834 sequences. (Running on oeis4.)