A223132 Number of 7Xn 0..2 arrays with no more than floor(7Xn/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..2 order

365, 406400, 354680696, 461597847603, 372676751243307, 508211382191466327, 408653905036011361072, 572145383755562675739043, 461434483273403102749210672

Offset

1,1

Comments

Row 7 of A223126

Links

Table of n, a(n) for n=1..9.

Example

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

Crossrefs

Sequence in context: A233081 A209106 A208257 * A199654 A241113 A208321

Adjacent sequences: A223129 A223130 A223131 * A223133 A223134 A223135

Keyword

nonn

Author

R. H. Hardin Mar 15 2013

Status

approved