|
|
A146619
|
|
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1001-1111 pattern in any orientation.
|
|
0
|
|
|
1, 1, 1, 7, 5, 29, 17, 229, 435, 11673, 13907, 525361, 673479, 94102915, 98332589, 24274612029, 24632647889, 11463377696197, 15275499402585, 14840749743707725, 19628783151131753, 35553199302440544313, 48796642845817392973
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,4
|
|
LINKS
|
|
|
EXAMPLE
|
Maximal 8 X 8 example
.0.0.1.0.0.1.0.0
.0.0.1.1.1.1.0.0
.1.1.0.0.0.0.1.1
.1.0.1.1.1.1.0.1
.1.0.1.0.0.1.0.1
.1.1.0.0.0.0.1.1
.0.0.1.0.0.1.0.0
.0.0.1.1.1.1.0.0
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|