A368303 - cp's OEIS frontend

A368303 Table read by downward antidiagonals: T(n,k) is the number of tilings of the n X k torus up to horizontal and vertical reflections by a tile that is fixed under 180-degree rotations but not horizontal or vertical reflections.

n	a(n)
1	1
2	2
3	2
4	2
5	5
6	2
7	4
8	8
9	8
10	4
11	4
12	22
13	24
14	22
15	4
16	8
17	44
18	120
19	120
20	44
21	8
22	9
23	135
24	612
25	1203
26	612
27	135
28	9
29	18
30	362
31	3892
32	13600
33	13600
34	3892
35	362
36	18
37	23
38	1211
39	25482
40	177342
41	337600
42	177342
43	25482
44	1211
45	23
46	44
47	3914
48	176654
49	2404372
50	8962618
51	8962618
52	2404372
53	176654
54	3914
55	44

[1, 2, 2, 2, 5, 2, 4, 8, 8, 4, 4, 22, 24, 22, 4, 8, 44, 120, 120, 44, 8, 9, 135, 612, 1203, 612, 135, 9, 18, 362, 3892, 13600, 13600, 3892, 362, 18, 23, 1211, 25482, 177342, 337600, 177342, 25482, 1211, 23, 44, 3914, 176654, 2404372, 8962618, 8962618, 2404372, 176654, 3914, 44]

cp's OEIS Frontend

A368303 Table read by downward antidiagonals: T(n,k) is the number of tilings of the n X k torus up to horizontal and vertical reflections by a tile that is fixed under 180-degree rotations but not horizontal or vertical reflections.

Table of values

List of values