A158441 - cp's OEIS frontend

A158441 G.f.: A(x) = exp( Sum_{n>=1} sigma(n)*x^n/(1+x^n) /n ).

n	a(n)
0	1
1	1
2	1
3	3
4	2
5	4
6	7
7	7
8	9
9	14
10	18
11	20
12	31
13	34
14	42
15	61
16	69
17	83
18	109
19	127
20	156
21	203
22	228
23	276
24	347
25	404
26	477
27	591
28	683
29	801
30	990
31	1132
32	1323
33	1598
34	1837
35	2148
36	2560
37	2929
38	3405
39	4018
40	4608
41	5319
42	6244
43	7124
44	8184
45	9569
46	10877
47	12465
48	14457
49	16412
50	18761
51	21633

[1, 1, 1, 3, 2, 4, 7, 7, 9, 14, 18, 20, 31, 34, 42, 61, 69, 83, 109, 127, 156, 203, 228, 276, 347, 404, 477, 591, 683, 801, 990, 1132, 1323, 1598, 1837, 2148, 2560, 2929, 3405, 4018, 4608, 5319, 6244, 7124, 8184, 9569, 10877, 12465, 14457, 16412, 18761, 21633]

cp's OEIS Frontend

A158441 G.f.: A(x) = exp( Sum_{n>=1} sigma(n)*x^n/(1+x^n) /n ).

Table of values

List of values