A147444 Number of n X n binary arrays with all ones connected only in a 11000-01100-00110-00011 pattern in any orientation.

1, 1, 1, 1, 9, 33, 169, 1097, 10553, 189871, 4385605, 121876221, 4534799043

Offset

1,5

Links

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

Example

Maximal 8 X 8 example
.0.0.0.0.0.1.1.0
.0.0.0.0.1.1.0.1
.0.0.0.1.1.0.1.1
.0.0.1.1.0.1.1.0
.1.1.0.0.1.1.0.0
.0.1.1.0.1.0.0.0
.0.0.1.1.0.0.0.0
.0.0.0.1.1.0.0.0

Crossrefs

Sequence in context: A097804 A146136 A264258 * A189179 A146445 A046997

Adjacent sequences: A147441 A147442 A147443 * A147445 A147446 A147447

Keyword

nonn

Author

R. H. Hardin

Status

approved