A147162 Number of n X n binary arrays with all ones connected only in a 1000-1101-0111 pattern in any orientation.

1, 1, 1, 17, 57, 317, 3151, 61021, 1767277, 57009275, 2869106215, 240681795661

Offset

1,4

Links

Table of n, a(n) for n=1..12.

Example

Maximal 8 X 8 example
.0.0.0.1.1.1.0.0
.0.0.0.1.0.1.1.0
.0.0.0.0.0.0.1.0
.0.0.0.0.1.1.0.0
.1.1.0.1.1.0.1.1
.1.0.0.1.0.0.0.1
.1.1.0.1.1.0.1.1
.0.1.1.0.0.1.1.0

Crossrefs

Sequence in context: A146682 A146650 A147131 * A146690 A146437 A146783

Adjacent sequences: A147159 A147160 A147161 * A147163 A147164 A147165

Keyword

nonn

Author

R. H. Hardin, Nov 04 2008

Status

approved