A204350 Number of (n+2)X9 0..3 arrays with no 3X3 subblock having three equal diagonal elements or three equal antidiagonal elements, and new values 0..3 introduced in row major order

304183813284988, 37918176847270068655, 4606746353051274080442020, 561805129589614687626505061188, 68484240207050885222667504458844900

Offset

1,1

Comments

Column 7 of A204351

Links

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

Example

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

Crossrefs

Sequence in context: A179660 A080125 A367001 * A172592 A082589 A371834

Adjacent sequences: A204347 A204348 A204349 * A204351 A204352 A204353

Keyword

nonn

Author

R. H. Hardin Jan 14 2012

Status

approved