A368141 - cp's OEIS frontend

A368141 Number of ways of tiling the n X n torus up to diagonal and antidiagonal reflections of the square by a tile that is fixed under only 180-degree rotations.

n	a(n)
1	1
2	4
3	24
4	1154
5	337600
6	477339020
7	2872202028544
8	72057595967315028
9	7462505059899321934848
10	3169126500571074529202043808
11	5492677668532710795071525279789056
12	38716571525226776289479030777837491607904
13	1106936151351216411420552029913564174524281470976

[1, 4, 24, 1154, 337600, 477339020, 2872202028544, 72057595967315028, 7462505059899321934848, 3169126500571074529202043808, 5492677668532710795071525279789056, 38716571525226776289479030777837491607904, 1106936151351216411420552029913564174524281470976]

cp's OEIS Frontend

A368141 Number of ways of tiling the n X n torus up to diagonal and antidiagonal reflections of the square by a tile that is fixed under only 180-degree rotations.

Table of values

List of values