

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
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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



