A368219 - cp's OEIS frontend

A368219 Table read by antidiagonals: T(n,k) is the number of tilings of the n X k grid up to horizontal and vertical reflections by a tile that is fixed under 180-degree rotation but not horizontal or vertical reflection.

n	a(n)
1	1
2	2
3	2
4	3
5	7
6	3
7	6
8	20
9	20
10	6
11	10
12	76
13	136
14	76
15	10
16	20
17	272
18	1056
19	1056
20	272
21	20
22	36
23	1072
24	8256
25	16576
26	8256
27	1072
28	36
29	72
30	4160
31	65792
32	262656
33	262656
34	65792
35	4160
36	72
37	136
38	16576
39	524800
40	4197376
41	8390656
42	4197376
43	524800
44	16576
45	136

[1, 2, 2, 3, 7, 3, 6, 20, 20, 6, 10, 76, 136, 76, 10, 20, 272, 1056, 1056, 272, 20, 36, 1072, 8256, 16576, 8256, 1072, 36, 72, 4160, 65792, 262656, 262656, 65792, 4160, 72, 136, 16576, 524800, 4197376, 8390656, 4197376, 524800, 16576, 136]

cp's OEIS Frontend

A368219 Table read by antidiagonals: T(n,k) is the number of tilings of the n X k grid up to horizontal and vertical reflections by a tile that is fixed under 180-degree rotation but not horizontal or vertical reflection.

Table of values

List of values