|
|
A147061
|
|
Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 01010-11111 pattern in any orientation.
|
|
0
|
|
|
1, 1, 1, 1, 5, 1, 10, 1, 26, 1, 220, 25, 1716, 153, 23943, 1076, 485243, 13889, 10665112, 185108, 364094762, 4253039, 18497655767, 156271576, 1302420306077, 7383352471
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,5
|
|
LINKS
|
|
|
EXAMPLE
|
Maximal 9 X 9 example
.0.0.1.1.1.1.1.0.0
.0.0.0.1.0.1.0.0.0
.0.0.1.0.0.0.1.0.0
.0.0.1.1.0.1.1.0.0
.0.0.1.0.0.0.1.0.0
.0.0.1.1.0.1.1.0.0
.0.0.1.0.0.0.1.0.0
.0.0.0.1.0.1.0.0.0
.0.0.1.1.1.1.1.0.0
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|