|
| |
|
|
A146034
|
|
Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 3X3 el 1,1 1,2 1,3 2,3 3,3 in any orientation.
|
|
0
| |
|
|
1, 1, 1, 3, 3, 7, 15, 43, 83, 271, 633, 3283, 9541, 54293, 204827, 1408893, 6437305, 54681853, 303651861, 3282191633, 22628378377, 297350762879, 2544553561975, 41024771076465, 431789004830701, 8608866149320377, 111456693040140865
(list; graph; refs; listen; history; internal format)
|
| |
| |
|
|
