|
| |
|
|
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, 7, 13, 27, 41, 105
(list; graph; refs; listen; history; internal format)
|
|
|
|
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: A205541 A072579 A067870 * A146718 A146646 A096194
Adjacent sequences: A147255 A147256 A147257 * A147259 A147260 A147261
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| R. H. Hardin (rhhardin(AT)att.net), Nov 04 2008
|
| |
|
|
