|
| |
|
|
A146139
|
|
Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 5-point barb 1,1 1,2 2,2 2,3 3,2 in any orientation.
|
|
0
| |
|
|
1, 1, 1, 1, 7, 21, 61, 403, 3415, 36395, 473261, 8291363, 204964495, 6738662861, 291876652529, 16526293766701, 1250870357604441, 127503882340930419, 17331789387120484429, 3122597067315836972733, 746394914944854757141353
(list; graph; refs; listen; history; internal format)
|
| |
| |
|
|
