A146714 Number of n X n binary arrays with all ones connected only in a 1100-1111-1000 pattern in any orientation.

1, 1, 1, 17, 53, 349, 4017, 76237, 2269673, 85654393, 5118155241, 486408820327, 69014385732571

Offset

1,4

Links

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

Example

Maximal 8 X 8 example
.0.0.0.0.1.1.0.0
.0.0.0.0.1.1.1.1
.0.0.0.0.1.0.0.0
.0.0.0.0.0.0.1.1
.1.1.1.0.1.1.1.1
.1.1.0.1.0.0.0.1
.0.1.0.1.1.1.1.0
.0.1.0.1.1.0.0.0

Crossrefs

Sequence in context: A146642 A146610 A146847 * A146397 A146405 A228244

Adjacent sequences: A146711 A146712 A146713 * A146715 A146716 A146717

Keyword

nonn

Author

R. H. Hardin, Nov 04 2008

Status

approved