|
Search: id:A147258
|
|
|
| A147258 |
|
Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 0001-1101-0111 pattern in any orientation. |
|
+0
1
|
|
| 1, 1, 1, 1, 1, 1, 1, 1, 7, 13, 27, 41, 105
(list; graph; listen)
|
|
|
OFFSET
|
1,9
|
|
|
EXAMPLE
|
Maximal 9 X 9 example
.0.0.0.0.0.1.0.0.0
.0.0.1.1.0.1.0.0.0
.0.1.0.1.1.1.0.0.0
.0.1.1.0.0.0.1.1.1
.0.0.1.0.0.0.1.0.0
.1.1.1.0.0.0.1.1.0
.0.0.0.1.1.1.0.1.0
.0.0.0.1.0.1.1.0.0
.0.0.0.1.0.0.0.0.0
|
|
CROSSREFS
|
Sequence in context: A060455 A072579 A067870 this_sequence A146718 A146646 A096194
Adjacent sequences: A147255 A147256 A147257 this_sequence A147259 A147260 A147261
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Ron Hardin (rhhardin(AT)att.net), Nov 04 2008
|
|
|
Search completed in 0.002 seconds
|
