A146698 Number of n X n binary arrays with all ones connected only in a 1100-1111-0010 pattern in any orientation.

1, 1, 1, 17, 49, 329, 4359, 91969, 2747799, 116126725, 8159527395, 914171765779, 153266923609199

Offset

1,4

Links

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

Example

Maximal 8 X 8 example
.0.0.1.1.0.0.0.0
.0.0.1.1.1.1.0.0
.0.0.0.0.1.0.1.0
.0.0.0.0.0.1.1.0
.0.1.0.0.1.0.1.1
.1.1.0.1.1.0.1.1
.0.1.1.0.1.1.0.0
.0.1.1.0.1.1.0.0

Crossrefs

Sequence in context: A146626 A146634 A146831 * A146706 A120612 A146461

Adjacent sequences: A146695 A146696 A146697 * A146699 A146700 A146701

Keyword

nonn

Author

R. H. Hardin, Nov 04 2008

Status

approved