A204311 Number of (n+2) X 4 0..2 arrays with every 3 X 3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally, and new values 0..2 introduced in row major order.

39669, 1867746, 90762504, 4174580535, 194940928754, 9133561570280, 426401340094121, 19922093313706046, 931060788375397137, 43503293047329197442, 2032740835032472249312, 94984324830365945437582

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

Cf. A204314.

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