A307057 - cp's OEIS frontend

A307057 Expansion of 1/(2 - Product_{k>=2} 1/(1 - x^k)).

n	a(n)
0	1
1	0
2	1
3	1
4	3
5	4
6	10
7	15
8	33
9	55
10	111
11	195
12	380
13	684
14	1306
15	2389
16	4507
17	8313
18	15591
19	28881
20	53991
21	100257
22	187086
23	347860
24	648512
25	1206656
26	2248399
27	4185087
28	7796011
29	14514195
30	27033073
31	50334299
32	93741325
33	174552379
34	325067573
35	605316388
36	1127249250
37	2099115548
38	3909023438
39	7279285948

[1, 0, 1, 1, 3, 4, 10, 15, 33, 55, 111, 195, 380, 684, 1306, 2389, 4507, 8313, 15591, 28881, 53991, 100257, 187086, 347860, 648512, 1206656, 2248399, 4185087, 7796011, 14514195, 27033073, 50334299, 93741325, 174552379, 325067573, 605316388, 1127249250, 2099115548, 3909023438, 7279285948]

cp's OEIS Frontend

A307057 Expansion of 1/(2 - Product_{k>=2} 1/(1 - x^k)).

Table of values

List of values