A204654 Number of (n+2)X5 0..3 arrays with every 3x3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally, and new values 0..3 introduced in row major order

6255285, 2025234324, 719028603457, 199026930961817, 61221086708065061, 19062621375769457797, 5774674206240599143141

Offset

1,1

Comments

Column 3 of A204655

Links

Table of n, a(n) for n=1..7.

Example

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

Crossrefs

Sequence in context: A185887 A306872 A186838 * A138941 A251379 A203894

Adjacent sequences: A204651 A204652 A204653 * A204655 A204656 A204657

Keyword

nonn

Author

R. H. Hardin Jan 17 2012

Status

approved