A208002 Number of n X n 0..1 arrays avoiding 0 0 1 and 1 0 0 horizontally and 0 1 1 and 1 1 0 vertically

2, 16, 92, 536, 7016, 90232, 3569728, 101519408, 13171648732, 783070626724, 349693561626416, 41247666769702640, 65777806787688875844, 14782056897493046845072, 86537979599825962734398012

Offset

1,1

Comments

Diagonal of A208007

Links

Table of n, a(n) for n=1..15.

Example

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

Crossrefs

Sequence in context: A214824 A317451 A220324 * A220932 A207558 A207413

Adjacent sequences: A207999 A208000 A208001 * A208003 A208004 A208005

Keyword

nonn

Author

R. H. Hardin Feb 22 2012

Status

approved