A205271 Number of (n+2)X8 0..1 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically or nw-to-se diagonally, and new values 0..1 introduced in row major order.

4285989, 686818023, 109752541538, 17296548519787, 2736913657929574, 433101439309430572, 68514158629820422369, 10839389328727316878809, 1714870603504177193636949, 271303150391768215905444630

Offset

1,1

Comments

Column 6 of A205273

Links

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

Example

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

Crossrefs

Sequence in context: A232351 A210308 A393481 * A234168 A015349 A210403

Adjacent sequences: A205268 A205269 A205270 * A205272 A205273 A205274

Keyword

nonn

Author

R. H. Hardin, Jan 24 2012

Status

approved