|
|
A146186
|
|
Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 110-111-100 pattern in any orientation.
|
|
0
|
|
|
1, 1, 1, 1, 1, 3, 17, 39, 67, 157, 683, 2593, 13101, 70047, 421791, 2622253, 19003451, 153761107, 1499143675, 15781975001, 199989123849, 2755107112873
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,6
|
|
LINKS
|
|
|
EXAMPLE
|
Maximal 8 X 8 example
.0.1.0.0.0.1.1.0
.1.1.0.0.0.1.1.1
.1.1.1.0.0.1.0.0
.0.0.0.0.0.0.0.0
.0.0.0.0.0.0.0.0
.0.0.1.0.0.1.1.1
.1.1.1.0.0.0.1.1
.0.1.1.0.0.0.1.0
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|