A278945 - cp's OEIS frontend

A278945 Expansion of Sum_{k>=1} k(2k - 1)*x^k/(1 - x^k).

n	a(n)
0	0
1	1
2	7
3	16
4	35
5	46
6	88
7	92
8	155
9	169
10	242
11	232
12	392
13	326
14	476
15	496
16	651
17	562
18	871
19	704
20	1050
21	968
22	1184
23	1036
24	1640
25	1271
26	1658
27	1600
28	2044
29	1654
30	2528
31	1892
32	2667
33	2392
34	2846
35	2552
36	3731
37	2702
38	3560
39	3344
40	4330
41	3322
42	4904
43	3656
44	5040
45	4654
46	5228
47	4372
48	6696
49	4845
50	6417
51	5728
52	7042
53	5566
54	8080
55	6272
56	8380
57	7160
58	8330
59	6904
60	10752

[0, 1, 7, 16, 35, 46, 88, 92, 155, 169, 242, 232, 392, 326, 476, 496, 651, 562, 871, 704, 1050, 968, 1184, 1036, 1640, 1271, 1658, 1600, 2044, 1654, 2528, 1892, 2667, 2392, 2846, 2552, 3731, 2702, 3560, 3344, 4330, 3322, 4904, 3656, 5040, 4654, 5228, 4372, 6696, 4845, 6417, 5728, 7042, 5566, 8080, 6272, 8380, 7160, 8330, 6904, 10752]

cp's OEIS Frontend

A278945 Expansion of Sum_{k>=1} k(2k - 1)*x^k/(1 - x^k).

Table of values

List of values

cp's OEIS Frontend

A278945 Expansion of Sum_{k>=1} k*(2*k - 1)*x^k/(1 - x^k).

Table of values

List of values

A278945 Expansion of Sum_{k>=1} k(2k - 1)*x^k/(1 - x^k).