|
| |
|
|
A145859
|
|
Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in two by two blocks.
|
|
0
| |
|
|
1, 2, 1, 2, 2, 7, 5, 38, 12, 182, 72, 1536, 513, 21327, 4531, 360939, 68662, 9098657, 1429824, 345351393, 40840428, 18058986880, 1747979822, 1362075540043, 106711196102, 149443289019658, 9237029528023, 23324890541218597
(list; graph; refs; listen; history; internal format)
|
| |
| |
|
|
