A204396 Number of (n+2)X8 0..1 arrays with no 3X3 subblock having three equal diagonal elements or three equal antidiagonal elements, and new values 0..1 introduced in row major order

279752, 7311488, 174658050, 3834777888, 91301191200, 2134049909922, 49709204045442, 1165483158963362, 27256189033449800, 637215243160289378, 14908342612019617800, 348716657874620217632, 8156486469587116824818

Offset

1,1

Comments

Column 6 of A204398

Links

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

Example

Some solutions for n=3
..0..0..1..1..0..1..0..1....0..1..1..1..1..1..1..1....0..0..0..1..1..1..0..0
..0..1..1..0..0..1..0..1....1..0..0..0..1..0..0..0....1..1..1..1..1..1..1..0
..0..0..1..1..1..1..0..0....1..1..1..0..0..0..0..0....1..0..0..0..0..0..0..0
..0..0..1..0..0..0..1..0....0..0..0..1..1..1..0..1....1..1..0..1..1..1..0..0
..0..0..1..1..1..0..0..0....1..1..0..1..0..1..1..1....1..1..0..1..0..1..0..1

Crossrefs

Sequence in context: A252209 A043601 A043867 * A013909 A016867 A016915

Adjacent sequences: A204393 A204394 A204395 * A204397 A204398 A204399

Keyword

nonn

Author

R. H. Hardin Jan 15 2012

Status

approved