A207923 Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 0 and 1 1 1 vertically

2, 16, 72, 576, 7744, 138384, 3773248, 143233024, 7961867964, 694232238436, 87251969161984, 15584659071915024, 4290136697951345984, 1785288592992685527184, 1059504761310616996153800

Offset

1,1

Comments

Diagonal of A207928

Links

R. H. Hardin, Table of n, a(n) for n = 1..19

Example

Some solutions for n=5
..0..0..1..1..1....1..0..0..1..1....1..0..1..1..1....0..0..1..1..1
..0..0..1..1..0....1..0..1..1..0....1..0..0..1..1....0..1..1..0..0
..1..1..0..0..1....0..1..1..0..1....0..1..1..0..0....1..0..0..1..1
..0..0..1..1..0....1..0..0..1..1....0..0..1..1..0....0..0..1..1..1
..1..0..1..1..1....1..1..1..0..0....1..1..0..0..1....1..1..1..0..0

Crossrefs

Sequence in context: A207677 A207508 A208063 * A207839 A216424 A212897

Adjacent sequences: A207920 A207921 A207922 * A207924 A207925 A207926

Keyword

nonn

Author

R. H. Hardin Feb 21 2012

Status

approved