

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.


1



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

1,1


COMMENTS



LINKS



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



KEYWORD

nonn


AUTHOR



STATUS

approved



