A385390 - cp's OEIS frontend

A385390 Irregular triangle read by rows: T(n,k) is the number of polysticks of size k, i.e., connected subsets of k edges, of the n X n flat torus, up to cyclic shifts and reflections of rows and columns, as well as interchange of rows and columns; 1 <= k <= 2*n^2.

n	a(n)
1	1
2	1
3	1
4	2
5	3
6	7
7	4
8	4
9	1
10	1
11	1
12	2
13	5
14	14
15	38
16	111
17	261
18	500
19	654
20	648
21	486
22	305
23	144
24	61
25	19
26	6
27	1
28	1
29	1
30	2
31	5
32	16
33	52
34	199
35	759
36	2921
37	10668
38	36761
39	115231
40	322237
41	778242
42	1576259
43	2591721
44	3412285
45	3671098
46	3320276
47	2565917
48	1717088
49	996355
50	503860
51	220074
52	83408
53	26783
54	7438
55	1678
56	351
57	52
58	11
59	1
60	1

[1, 1, 1, 2, 3, 7, 4, 4, 1, 1, 1, 2, 5, 14, 38, 111, 261, 500, 654, 648, 486, 305, 144, 61, 19, 6, 1, 1, 1, 2, 5, 16, 52, 199, 759, 2921, 10668, 36761, 115231, 322237, 778242, 1576259, 2591721, 3412285, 3671098, 3320276, 2565917, 1717088, 996355, 503860, 220074, 83408, 26783, 7438, 1678, 351, 52, 11, 1, 1]

cp's OEIS Frontend

A385390 Irregular triangle read by rows: T(n,k) is the number of polysticks of size k, i.e., connected subsets of k edges, of the n X n flat torus, up to cyclic shifts and reflections of rows and columns, as well as interchange of rows and columns; 1 <= k <= 2*n^2.

Table of values

List of values