A146783 Number of n X n binary arrays with all ones connected only in a 0100-1100-1111 pattern in any orientation.

1, 1, 1, 17, 57, 369, 5039, 105411, 2937697, 116344821, 7465413345, 762264403505, 114422662087491

Offset

1,4

Links

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

Example

Maximal 8 X 8 example
.1.1.1.1.0.0.1.1
.1.1.0.0.0.1.1.1
.0.1.0.0.1.0.0.1
.0.0.0.0.1.0.0.1
.1.0.1.1.1.0.0.0
.1.0.0.1.1.0.1.0
.1.1.1.0.0.0.1.1
.1.1.0.0.1.1.1.1

Crossrefs

Sequence in context: A147162 A146690 A146437 * A146570 A147209 A147239

Adjacent sequences: A146780 A146781 A146782 * A146784 A146785 A146786

Keyword

nonn

Author

R. H. Hardin, Nov 04 2008

Status

approved