|
| |
|
|
A351159
|
|
Number of polyominoes of n cells with both diagonal symmetries, for which the 180-degree rotational symmetry has an axis that coincides with the center of a square, but without 90-degree rotational symmetry.
|
|
2
|
|
|
|
0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 2, 1, 3, 1, 6, 4, 9, 6, 20, 19, 32, 25, 64, 82, 114, 107, 217, 332, 397, 442, 751, 1316
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
| |
| |
|
|
