|
Search: id:A147382
|
|
|
| A147382 |
|
Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 10000-11100-00111-00001 pattern in any orientation. |
|
+0
1
|
|
| 1, 1, 1, 1, 1, 1, 1, 1, 3, 11, 25, 47, 101, 257, 681, 1819, 5437, 17747, 62109, 244571, 1025085, 4586657, 22318221
(list; graph; listen)
|
|
|
OFFSET
|
1,9
|
|
|
EXAMPLE
|
Maximal 9 X 9 example
.1.0.0.0.0.0.0.1.1
.1.1.1.0.0.0.0.1.0
.0.0.1.1.1.0.1.1.0
.0.0.0.0.1.0.1.0.0
.0.0.1.1.0.1.1.0.0
.0.0.1.0.1.0.0.0.0
.0.1.1.0.1.1.1.0.0
.0.1.0.0.0.0.1.1.1
.1.1.0.0.0.0.0.0.1
|
|
CROSSREFS
|
Sequence in context: A112051 A118436 A056106 this_sequence A164303 A129082 A060746
Adjacent sequences: A147379 A147380 A147381 this_sequence A147383 A147384 A147385
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Ron Hardin (rhhardin(AT)att.net)
|
|
|
Search completed in 0.004 seconds
|
