A368137 - cp's OEIS frontend

A368137 Number of ways of tiling the n X n torus up to the symmetries of the square by a tile that is fixed under 180-degree rotation.

n	a(n)
1	1
2	23
3	3776
4	33601130
5	5629507922944
6	16397105889110874288
7	808450637900797243544928256
8	664613997892457948377435344457451552
9	9021615045252487149406066393257455761827823616
10	2008672555323737844427452616231411384297679581096869206528

[1, 23, 3776, 33601130, 5629507922944, 16397105889110874288, 808450637900797243544928256, 664613997892457948377435344457451552, 9021615045252487149406066393257455761827823616, 2008672555323737844427452616231411384297679581096869206528]

cp's OEIS Frontend

A368137 Number of ways of tiling the n X n torus up to the symmetries of the square by a tile that is fixed under 180-degree rotation.

Table of values

List of values