A207641 - cp's OEIS frontend

A207641 G.f.: Sum_{n>=0} x^n * Product_{k=1..n} (1+x^k)/(1-x^k).

n	a(n)
0	1
1	1
2	3
3	5
4	9
5	15
6	25
7	39
8	61
9	93
10	139
11	205
12	299
13	429
14	611
15	861
16	1201
17	1663
18	2285
19	3115
20	4221
21	5683
22	7605
23	10123
24	13405
25	17661
26	23163
27	30245
28	39323
29	50925
30	65699
31	84445
32	108167
33	138089
34	175719
35	222921
36	281965
37	355627
38	447309
39	561139
40	702133
41	876395
42	1091301

[1, 1, 3, 5, 9, 15, 25, 39, 61, 93, 139, 205, 299, 429, 611, 861, 1201, 1663, 2285, 3115, 4221, 5683, 7605, 10123, 13405, 17661, 23163, 30245, 39323, 50925, 65699, 84445, 108167, 138089, 175719, 222921, 281965, 355627, 447309, 561139, 702133, 876395, 1091301]

cp's OEIS Frontend

A207641 G.f.: Sum_{n>=0} x^n * Product_{k=1..n} (1+x^k)/(1-x^k).

Table of values

List of values