|
| |
|
|
A146158
|
|
Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only either as two by three or three by two blocks.
|
|
0
| |
|
|
1, 1, 1, 1, 1, 3, 8, 14, 23, 49, 124, 341, 1108, 3645, 13272, 50449, 210792, 970179, 4987095, 27600222, 171681370, 1133281367, 8288847384, 64922838278, 565664086802, 5311135075018, 55657682314667, 624953409635386
(list; graph; refs; listen; history; internal format)
|
| |
| |
|
|
