|
|
A147034
|
|
Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 0100-0100-1111-0010 pattern in any orientation.
|
|
0
|
|
|
1, 1, 1, 1, 1, 5, 25, 85, 499, 2253, 9751, 103141, 1030207, 12930523, 188986765, 3964919203, 79856104275, 2515127447393
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,6
|
|
LINKS
|
|
|
EXAMPLE
|
Maximal 8 X 8 example
.0.1.0.0.0.0.1.0
.0.1.1.1.0.0.1.0
.1.1.0.0.1.1.1.1
.0.1.0.0.0.1.0.0
.0.0.1.0.0.0.1.0
.1.1.1.1.0.0.1.1
.0.1.0.0.1.1.1.0
.0.1.0.0.0.0.1.0
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|