A205413 Number of (n+2)X8 0..2 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically or nw-to-se diagonally exactly two ways, and new values 0..2 introduced in row major order

14452683, 768581101, 45661264026, 1715387177450, 98445276297551

Offset

1,1

Comments

Column 6 of A205415

Links

Table of n, a(n) for n=1..5.

Example

Some solutions for n=3
..0..0..0..0..0..0..0..0....0..1..1..0..2..1..0..1....0..0..0..0..1..2..2..1
..0..0..0..0..0..1..0..1....0..1..0..1..2..1..0..2....0..2..0..0..1..2..2..0
..1..1..2..1..1..1..0..2....0..1..1..1..1..1..1..1....0..1..1..1..1..1..2..2
..2..2..2..2..2..1..0..2....0..0..0..0..0..0..0..0....0..0..0..0..1..0..2..2
..2..1..2..0..0..1..1..1....0..0..2..2..0..1..2..0....2..1..0..2..1..0..2..2

Crossrefs

Sequence in context: A238080 A251009 A136608 * A186067 A183661 A352424

Adjacent sequences: A205410 A205411 A205412 * A205414 A205415 A205416

Keyword

nonn

Author

R. H. Hardin Jan 26 2012

Status

approved