A223004 Number of 5Xn 0..2 arrays with no more than floor(5Xn/2) elements equal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..2 order

41, 2894, 184475, 21692365, 1388632315, 182298485349, 12067682881753, 1638508895884566, 110552151586138768

Offset

1,1

Comments

Row 5 of A223000

Links

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

Example

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

Crossrefs

Sequence in context: A211907 A291860 A193124 * A275093 A275349 A215826

Adjacent sequences: A223001 A223002 A223003 * A223005 A223006 A223007

Keyword

nonn

Author

R. H. Hardin Mar 11 2013

Status

approved