A147115 Number of n X n binary arrays with all ones connected only in a 1000-1000-1111-0100 pattern in any orientation.

1, 1, 1, 9, 33, 105, 733, 10679, 271641, 6329349, 226356533, 13139244743, 1208391296607

Offset

1,4

Links

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

Example

Maximal 8 X 8 example
.0.1.0.0.1.1.1.0
.1.1.1.1.0.0.1.1
.1.0.0.0.0.0.1.0
.1.0.0.0.0.0.1.0
.0.1.0.0.0.0.0.1
.0.1.0.0.0.0.0.1
.1.1.0.0.1.1.1.1
.0.1.1.1.0.0.1.0

Crossrefs

Sequence in context: A147269 A147123 A147107 * A147261 A197359 A147155

Adjacent sequences: A147112 A147113 A147114 * A147116 A147117 A147118

Keyword

nonn

Author

R. H. Hardin, Nov 04 2008

Status

approved