|
| |
|
|
A146588
|
|
Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 0110-1111-0100 pattern in any orientation.
|
|
0
| |
|
|
1, 1, 1, 1, 1, 1, 1, 1, 17, 17, 49, 49, 301, 301, 4891, 4891, 104131, 104131, 3555075, 3555075, 179509487, 179509487, 14641599949
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,9
|
|
|
EXAMPLE
| Maximal 9 X 9 example
.0.0.0.0.0.0.0.0.0
.0.0.1.0.0.0.1.0.0
.1.1.1.1.0.1.1.1.1
.0.1.1.0.0.0.1.1.0
.0.0.0.0.0.0.0.0.0
.0.1.1.0.0.0.1.1.0
.1.1.1.1.0.1.1.1.1
.0.0.1.0.0.0.1.0.0
.0.0.0.0.0.0.0.0.0
|
|
|
CROSSREFS
| Sequence in context: A146857 A146668 A146732 * A146628 A146636 A146833
Adjacent sequences: A146585 A146586 A146587 * A146589 A146590 A146591
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| R. H. Hardin (rhhardin(AT)att.net), Nov 04 2008
|
| |
|
|
