A202413 Number of (n+2)X(n+2) binary arrays with no more than one of any consecutive three bits set in any row or column

34, 356, 7209, 259651, 17439289, 2189182446, 507851160543, 218307429573974, 174227993366338844, 257822582804511694491, 707314015481240313274351, 3598905005467537466992859137, 33959215254291376990195684315384

Offset

1,1

Comments

Diagonal of A202421

Links

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

Example

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

Crossrefs

Sequence in context: A362953 A244881 A296833 * A168122 A271756 A228995

Adjacent sequences: A202410 A202411 A202412 * A202414 A202415 A202416

Keyword

nonn

Author

R. H. Hardin Dec 19 2011

Status

approved