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A204311 Number of (n+2)X4 0..2 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally, and new values 0..2 introduced in row major order 1
39669, 1867746, 90762504, 4174580535, 194940928754, 9133561570280, 426401340094121, 19922093313706046, 931060788375397137, 43503293047329197442, 2032740835032472249312, 94984324830365945437582 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A204314

LINKS

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

EXAMPLE

Some solutions for n=3

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

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

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

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

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

CROSSREFS

Sequence in context: A004671 A162866 A236132 * A235255 A234920 A116220

Adjacent sequences:  A204308 A204309 A204310 * A204312 A204313 A204314

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 14 2012

STATUS

approved

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Last modified August 4 13:53 EDT 2021. Contains 346447 sequences. (Running on oeis4.)