A204779 Number of (n+2)X7 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

537665796, 465761252736, 387664140116880, 323760110018338584, 270709468240858645320, 226195161314062528733400, 189028841218044281822571840, 157967089903037319532707782016

Offset

1,1

Comments

Column 5 of A204782

Links

R. H. Hardin, Table of n, a(n) for n = 1..13

Example

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

Crossrefs

Sequence in context: A011579 A122970 A362870 * A278201 A172619 A090468

Adjacent sequences: A204776 A204777 A204778 * A204780 A204781 A204782

Keyword

nonn

Author

R. H. Hardin Jan 19 2012

Status

approved