A307067 - cp's OEIS frontend

A307067 Expansion of 1/(2 - Product_{k>=2} (1 + x^k)).

n	a(n)
0	1
1	0
2	1
3	1
4	2
5	4
6	6
7	12
8	19
9	36
10	60
11	108
12	187
13	328
14	576
15	1005
16	1765
17	3084
18	5408
19	9461
20	16575
21	29017
22	50812
23	88977
24	155792
25	272813
26	477684
27	836466
28	1464654
29	2564685
30	4490833
31	7863610
32	13769463
33	24110774
34	42218847
35	73926591
36	129448088
37	226667986
38	396903536
39	694991728

[1, 0, 1, 1, 2, 4, 6, 12, 19, 36, 60, 108, 187, 328, 576, 1005, 1765, 3084, 5408, 9461, 16575, 29017, 50812, 88977, 155792, 272813, 477684, 836466, 1464654, 2564685, 4490833, 7863610, 13769463, 24110774, 42218847, 73926591, 129448088, 226667986, 396903536, 694991728]

cp's OEIS Frontend

A307067 Expansion of 1/(2 - Product_{k>=2} (1 + x^k)).

Table of values

List of values