A266686 - cp's OEIS frontend

A266686 Expansion of Product_{k>=1} (1 + x^k - x^(3*k)).

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	2
6	2
7	3
8	4
9	5
10	4
11	6
12	8
13	9
14	10
15	11
16	14
17	16
18	18
19	21
20	25
21	28
22	31
23	36
24	41
25	48
26	52
27	59
28	69
29	77
30	85
31	96
32	109
33	121
34	133
35	151
36	172
37	189
38	208
39	231
40	260
41	287
42	316
43	350
44	390
45	432
46	471
47	521
48	578
49	636
50	695
51	764
52	842
53	924
54	1009
55	1107
56	1218
57	1330
58	1449
59	1584

[1, 1, 1, 1, 2, 2, 2, 3, 4, 5, 4, 6, 8, 9, 10, 11, 14, 16, 18, 21, 25, 28, 31, 36, 41, 48, 52, 59, 69, 77, 85, 96, 109, 121, 133, 151, 172, 189, 208, 231, 260, 287, 316, 350, 390, 432, 471, 521, 578, 636, 695, 764, 842, 924, 1009, 1107, 1218, 1330, 1449, 1584]

cp's OEIS Frontend

A266686 Expansion of Product_{k>=1} (1 + x^k - x^(3*k)).

Table of values

List of values