A375861 - cp's OEIS frontend

A375861 Array T(n,m) read by antidiagonals: In an n X m grid draw straight walls between cells, starting at a border, such that the resulting figure is connected and has only one-cell wide paths; T(n,m) is the number of solutions up to symmetries of the rectangle.

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	5
9	5
10	1
11	1
12	9
13	19
14	9
15	1
16	1
17	19
18	63
19	63
20	19
21	1
22	1
23	35
24	192
25	298
26	192
27	35
28	1
29	1
30	71
31	576
32	1246
33	1246
34	576
35	71
36	1
37	1
38	135
39	1698
40	4857
41	6351
42	4857
43	1698
44	135
45	1
46	1
47	271
48	5042
49	18768
50	29467
51	29467
52	18768
53	5042
54	271
55	1
56	1
57	527
58	14963
59	72968
60	134397
61	152516
62	134397
63	72968
64	14963
65	527
66	1

[1, 1, 1, 1, 2, 1, 1, 5, 5, 1, 1, 9, 19, 9, 1, 1, 19, 63, 63, 19, 1, 1, 35, 192, 298, 192, 35, 1, 1, 71, 576, 1246, 1246, 576, 71, 1, 1, 135, 1698, 4857, 6351, 4857, 1698, 135, 1, 1, 271, 5042, 18768, 29467, 29467, 18768, 5042, 271, 1, 1, 527, 14963, 72968, 134397, 152516, 134397, 72968, 14963, 527, 1]

cp's OEIS Frontend

A375861 Array T(n,m) read by antidiagonals: In an n X m grid draw straight walls between cells, starting at a border, such that the resulting figure is connected and has only one-cell wide paths; T(n,m) is the number of solutions up to symmetries of the rectangle.

Table of values

List of values