A326125 - cp's OEIS frontend

A326125 Expansion of Sum_{k>=1} k^2 * x^k / (1 + x^k)^2.

n	a(n)
1	1
2	2
3	12
4	4
5	30
6	24
7	56
8	8
9	117
10	60
11	132
12	48
13	182
14	112
15	360
16	16
17	306
18	234
19	380
20	120
21	672
22	264
23	552
24	96
25	775
26	364
27	1080
28	224
29	870
30	720
31	992
32	32
33	1584
34	612
35	1680
36	468
37	1406
38	760
39	2184
40	240
41	1722
42	1344
43	1892
44	528
45	3510
46	1104
47	2256
48	192
49	2793
50	1550
51	3672
52	728
53	2862
54	2160

[1, 2, 12, 4, 30, 24, 56, 8, 117, 60, 132, 48, 182, 112, 360, 16, 306, 234, 380, 120, 672, 264, 552, 96, 775, 364, 1080, 224, 870, 720, 992, 32, 1584, 612, 1680, 468, 1406, 760, 2184, 240, 1722, 1344, 1892, 528, 3510, 1104, 2256, 192, 2793, 1550, 3672, 728, 2862, 2160]

cp's OEIS Frontend

A326125 Expansion of Sum_{k>=1} k^2 * x^k / (1 + x^k)^2.

Table of values

List of values