A202491 Number of (n+2)X9 binary arrays avoiding patterns 000 and 010 in rows, columns and nw-to-se diagonals

174720, 2822400, 81920160, 2377732644, 56953820952, 1364214656016, 34683335205048, 881777464888644, 22015082631334650, 549644193193005625, 13795021325301502000, 346228734374528569600, 8677470058423398780000

Offset

1,1

Comments

Column 7 of A202492

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

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

Crossrefs

Sequence in context: A214172 A247348 A029830 * A257359 A126557 A342325

Adjacent sequences: A202488 A202489 A202490 * A202492 A202493 A202494

Keyword

nonn

Author

R. H. Hardin Dec 20 2011

Status

approved