A206779 Number of n X n 0..1 arrays avoiding 0 0 1 horizontally and 0 1 1 vertically

2, 16, 230, 6752, 316744, 25571618, 3210775788, 659966594476, 210237711494832, 108398626938474968, 87023259420675848572, 113203578571407946861858, 230632914425943836888182164

Offset

1,1

Comments

Diagonal of A206785

Links

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

Example

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

Crossrefs

Sequence in context: A152542 A206877 A206995 * A233288 A181218 A301581

Adjacent sequences: A206776 A206777 A206778 * A206780 A206781 A206782

Keyword

nonn

Author

R. H. Hardin Feb 12 2012

Status

approved