A147223 Number of n X n binary arrays with all ones connected only in a 11011-01110 pattern in any orientation.

1, 1, 1, 1, 25, 141, 844, 11391, 152742, 3160409, 110025582, 4931270353, 297917318524

Offset

1,5

Links

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

Example

Maximal 8 X 8 example
.1.1.0.1.1.0.0.1
.0.1.1.1.0.0.1.1
.1.0.0.0.0.0.1.0
.1.1.0.0.0.0.1.1
.0.1.0.0.0.0.0.1
.1.1.0.0.0.0.0.0
.1.0.1.1.1.0.0.0
.0.1.1.0.1.1.0.0

Crossrefs

Sequence in context: A113524 A147505 A147360 * A184057 A235713 A072471

Adjacent sequences: A147220 A147221 A147222 * A147224 A147225 A147226

Keyword

nonn

Author

R. H. Hardin, Nov 04 2008

Status

approved