A204781 Number of (n+2)X9 0..2 arrays with no 3X3 subblock having three equal diagonal elements or three equal antidiagonal elements, and new values 0..2 introduced in row major order

244944162648, 1352264628934656, 6972630432052561776, 36302705908249227882336, 189028841218044281822571840, 983786658795358884417033843750, 5121078716739687209206582420410120

Offset

1,1

Comments

Column 7 of A204782

Links

R. H. Hardin, Table of n, a(n) for n = 1..11

Example

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

Crossrefs

Sequence in context: A202725 A132908 A271820 * A288477 A268846 A076254

Adjacent sequences: A204778 A204779 A204780 * A204782 A204783 A204784

Keyword

nonn

Author

R. H. Hardin Jan 19 2012

Status

approved