A207263 Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 1 1 and 1 0 1 vertically

2, 16, 82, 611, 5904, 45520, 467686, 4556171, 48655983, 567847595, 6351729691, 80023297510, 1005050679531, 12834603243934, 174354454607454, 2353308940308585, 32870079608035300, 470039857440029540

Offset

1,1

Comments

Diagonal of A207269

Links

R. H. Hardin, Table of n, a(n) for n = 1..23

Example

Some solutions for n=4
..1..0..0..1....0..1..0..1....1..1..0..1....1..0..0..1....0..0..1..0
..0..1..0..0....0..1..0..0....0..1..0..1....0..0..1..0....1..1..1..0
..0..0..1..0....1..1..0..0....0..1..0..1....0..1..0..0....0..0..1..0
..1..0..0..1....0..1..0..1....1..0..1..0....1..0..0..1....0..0..1..0

Crossrefs

Sequence in context: A052346 A207482 A207880 * A207757 A283951 A207340

Adjacent sequences: A207260 A207261 A207262 * A207264 A207265 A207266

Keyword

nonn

Author

R. H. Hardin Feb 16 2012

Status

approved