A202427 Number of (n+2)X(n+2) binary arrays avoiding patterns 000 and 001 in rows, columns and nw-to-se diagonals

108, 2100, 67072, 4502836, 570876264, 142785263584, 69184636563900, 65419917142298252, 120362711752648774656, 431392315946934883527224, 3010546776670356917559015060, 40915921508288561665462211859200

Offset

1,1

Comments

Diagonal of A202435

Links

R. H. Hardin, Table of n, a(n) for n = 1..19

Example

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

Crossrefs

Sequence in context: A263970 A250339 A263961 * A063809 A183357 A264681

Adjacent sequences: A202424 A202425 A202426 * A202428 A202429 A202430

Keyword

nonn

Author

R. H. Hardin Dec 19 2011

Status

approved