A318290 - cp's OEIS frontend

A318290 Expansion of Sum_{k>=1} (-1 + Product_{j>=1} (1 + jx^(kj))).

n	a(n)
1	1
2	3
3	6
4	10
5	16
6	33
7	44
8	74
9	126
10	204
11	289
12	503
13	696
14	1151
15	1749
16	2599
17	3742
18	5928
19	8245
20	12658
21	18351
22	26715
23	37828
24	55296
25	78346
26	111882
27	159664
28	226782
29	315416
30	446670
31	618667
32	860764
33	1199995
34	1649820
35	2289020
36	3157349
37	4303996
38	5878786
39	8033272
40	10894516
41	14749052

[1, 3, 6, 10, 16, 33, 44, 74, 126, 204, 289, 503, 696, 1151, 1749, 2599, 3742, 5928, 8245, 12658, 18351, 26715, 37828, 55296, 78346, 111882, 159664, 226782, 315416, 446670, 618667, 860764, 1199995, 1649820, 2289020, 3157349, 4303996, 5878786, 8033272, 10894516, 14749052]

cp's OEIS Frontend

A318290 Expansion of Sum_{k>=1} (-1 + Product_{j>=1} (1 + jx^(kj))).

Table of values

List of values

cp's OEIS Frontend

A318290 Expansion of Sum_{k>=1} (-1 + Product_{j>=1} (1 + j*x^(k*j))).

Table of values

List of values

A318290 Expansion of Sum_{k>=1} (-1 + Product_{j>=1} (1 + jx^(kj))).