|
|
A147026
|
|
Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 01000-11111-01000 pattern in any orientation.
|
|
0
|
|
|
1, 1, 1, 1, 1, 9, 17, 35, 145, 589, 2723, 16121, 110705, 888953, 8435682, 98480917, 1294018001, 21003172843
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,6
|
|
LINKS
|
|
|
EXAMPLE
|
Maximal 8 X 8 example
.0.1.0.0.1.0.0.0
.0.1.0.1.1.1.1.1
.0.1.0.0.1.0.0.0
.1.1.1.0.0.0.1.0
.0.1.0.0.0.1.1.1
.0.0.0.1.0.0.1.0
.1.1.1.1.1.0.1.0
.0.0.0.1.0.0.1.0
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|