A163920 - cp's OEIS frontend

A163920 Expansion of Sum_{k>0} k(k+1)/2 x^k / (1 - (-x)^k)^3.

n	a(n)
1	1
2	0
3	12
4	9
5	30
6	0
7	56
8	60
9	126
10	0
11	132
12	126
13	182
14	0
15	420
16	316
17	306
18	0
19	380
20	330
21	798
22	0
23	552
24	888
25	875
26	0
27	1296
28	630
29	870
30	0
31	992
32	1536
33	1914
34	0
35	2100
36	1467
37	1406
38	0
39	2652
40	2360
41	1722
42	0
43	1892
44	1518
45	4860
46	0
47	2256
48	4872
49	3234
50	0
51	4488
52	2106
53	2862
54	0
55	5060

[1, 0, 12, 9, 30, 0, 56, 60, 126, 0, 132, 126, 182, 0, 420, 316, 306, 0, 380, 330, 798, 0, 552, 888, 875, 0, 1296, 630, 870, 0, 992, 1536, 1914, 0, 2100, 1467, 1406, 0, 2652, 2360, 1722, 0, 1892, 1518, 4860, 0, 2256, 4872, 3234, 0, 4488, 2106, 2862, 0, 5060]

cp's OEIS Frontend

A163920 Expansion of Sum_{k>0} k(k+1)/2 x^k / (1 - (-x)^k)^3.

Table of values

List of values

cp's OEIS Frontend

A163920 Expansion of Sum_{k>0} k*(k+1)/2 * x^k / (1 - (-x)^k)^3.

Table of values

List of values

A163920 Expansion of Sum_{k>0} k(k+1)/2 x^k / (1 - (-x)^k)^3.