A268498 - cp's OEIS frontend

A268498 Expansion of Product_{k>=1} ((1 + 2*x^k) / (1 + x^k)).

n	a(n)
0	1
1	1
2	0
3	3
4	-1
5	3
6	3
7	3
8	0
9	4
10	12
11	0
12	9
13	-3
14	21
15	12
16	17
17	-3
18	33
19	0
20	33
21	36
22	36
23	27
24	21
25	52
26	24
27	90
28	72
29	99
30	24
31	138
32	21
33	207
34	0
35	261
36	149
37	267
38	45
39	333
40	174
41	339
42	174
43	345
44	411
45	654
46	330
47	456
48	657
49	535
50	684
51	483
52	1233
53	489
54	1353
55	882
56	1803
57	720
58	1902
59	756

[1, 1, 0, 3, -1, 3, 3, 3, 0, 4, 12, 0, 9, -3, 21, 12, 17, -3, 33, 0, 33, 36, 36, 27, 21, 52, 24, 90, 72, 99, 24, 138, 21, 207, 0, 261, 149, 267, 45, 333, 174, 339, 174, 345, 411, 654, 330, 456, 657, 535, 684, 483, 1233, 489, 1353, 882, 1803, 720, 1902, 756]

cp's OEIS Frontend

A268498 Expansion of Product_{k>=1} ((1 + 2*x^k) / (1 + x^k)).

Table of values

List of values