A147346 Number of n X n binary arrays with all ones connected only in a 01010-11111-00100 pattern in any orientation.

1, 1, 1, 1, 13, 49, 229, 1867, 20463, 291821, 6315721, 181852653, 7128512813, 395610811947

Offset

1,5

Links

Table of n, a(n) for n=1..14.

Example

Maximal 8 X 8 example
.0.1.0.1.0.0.1.0
.1.1.1.1.1.0.1.1
.0.0.1.0.0.1.1.0
.0.1.0.0.0.0.1.1
.1.1.0.0.0.0.1.0
.0.1.1.0.0.1.0.0
.1.1.0.1.1.1.1.1
.0.1.0.0.1.0.1.0

Crossrefs

Sequence in context: A319086 A146287 A289999 * A147452 A146782 A373578

Adjacent sequences: A147343 A147344 A147345 * A147347 A147348 A147349

Keyword

nonn

Author

R. H. Hardin

Status

approved