A202608 Number of (n+2)X(n+2) binary arrays avoiding patterns 001 and 010 in rows and columns

108, 1291, 35356, 1536150, 115148467, 16531918205, 4356301952933, 2089677745641443, 1861309883007751197, 3075662081788178237169

Offset

1,1

Comments

Diagonal of A202616

Links

Table of n, a(n) for n=1..10.

Example

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

Crossrefs

Sequence in context: A228174 A184201 A101213 * A202092 A202484 A096953

Adjacent sequences: A202605 A202606 A202607 * A202609 A202610 A202611

Keyword

nonn

Author

R. H. Hardin Dec 21 2011

Status

approved