A202092 Number of (n+2) X (n+2) binary arrays avoiding patterns 001 and 011 in rows and columns.

108, 1296, 12000, 160000, 1715000, 24010000, 280052640, 4032758016, 49700008512, 728933458176, 9337998878208, 138735983333376, 1829038842774000, 27435582641610000, 369797030228340000, 5588044012339360000

Offset

1,1

Comments

Diagonal of A202100.

Links

Table of n, a(n) for n=1..16.

Example

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

Crossrefs

Cf. A202100.

Sequence in context: A184201 A101213 A202608 * A202484 A096953 A187302

Adjacent sequences: A202089 A202090 A202091 * A202093 A202094 A202095

Keyword

nonn

Author

R. H. Hardin Dec 11 2011

Status

approved