A326121 - cp's OEIS frontend

A326121 Expansion of Sum_{k>=1} k^2 * x^(2k) / (1 - k x^k).

n	a(n)
1	0
2	1
3	1
4	5
5	1
6	18
7	1
8	33
9	28
10	58
11	1
12	246
13	1
14	178
15	369
16	577
17	1
18	1539
19	1
20	2774
21	2531
22	2170
23	1
24	16706
25	3126
26	8362
27	20413
28	35366
29	1
30	116444
31	1
32	135425
33	178479
34	131362
35	94933
36	1110999
37	1
38	524650
39	1596521
40	2530946
41	1
42	7280892
43	1
44	8403734
45	16364457
46	8389138
47	1
48	78568322
49	823544
50	43420683

[0, 1, 1, 5, 1, 18, 1, 33, 28, 58, 1, 246, 1, 178, 369, 577, 1, 1539, 1, 2774, 2531, 2170, 1, 16706, 3126, 8362, 20413, 35366, 1, 116444, 1, 135425, 178479, 131362, 94933, 1110999, 1, 524650, 1596521, 2530946, 1, 7280892, 1, 8403734, 16364457, 8389138, 1, 78568322, 823544, 43420683]

cp's OEIS Frontend

A326121 Expansion of Sum_{k>=1} k^2 * x^(2k) / (1 - k x^k).

Table of values

List of values

cp's OEIS Frontend

A326121 Expansion of Sum_{k>=1} k^2 * x^(2*k) / (1 - k * x^k).

Table of values

List of values

A326121 Expansion of Sum_{k>=1} k^2 * x^(2k) / (1 - k x^k).