|
|
A146716
|
|
Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 1100-1111-1000 pattern in any orientation.
|
|
0
|
|
|
1, 1, 1, 1, 1, 1, 1, 1, 17, 17, 53, 53, 349, 349, 4017, 4017, 76237, 76237, 2269673, 2269673, 85654393, 85654393
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,9
|
|
LINKS
|
|
|
EXAMPLE
|
Maximal 9 X 9 example
.0.0.0.0.0.0.0.0.0
.0.0.0.1.0.1.0.0.0
.1.1.1.1.0.1.1.1.1
.0.0.1.1.0.1.1.0.0
.0.0.0.0.0.0.0.0.0
.0.0.1.1.0.1.1.0.0
.1.1.1.1.0.1.1.1.1
.0.0.0.1.0.1.0.0.0
.0.0.0.0.0.0.0.0.0
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|