A147489 Number of n X n binary arrays with all ones connected only in a 11101-10111 pattern in any orientation.

1, 1, 1, 1, 25, 137, 521, 6501, 70441, 694381, 20946853, 656540805, 20990265609

Offset

1,5

Links

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

Example

Maximal 8 X 8 example
.1.1.0.1.0.1.1.1
.1.0.0.1.1.1.0.1
.1.1.0.0.0.0.0.0
.0.1.0.0.0.0.1.1
.1.1.0.0.0.0.1.0
.0.0.0.0.0.0.1.1
.1.1.1.0.1.0.0.1
.1.0.1.1.1.0.1.1

Crossrefs

Sequence in context: A367104 A364194 A317217 * A156158 A195977 A233368

Adjacent sequences: A147486 A147487 A147488 * A147490 A147491 A147492

Keyword

nonn

Author

R. H. Hardin

Status

approved