A318844 - cp's OEIS frontend

A318844 Expansion of Product_{k>=1} (1 + x^k)^(d(k)-1), where d(k) = number of divisors of k (A000005).

n	a(n)
0	1
1	0
2	1
3	1
4	2
5	2
6	5
7	4
8	8
9	10
10	15
11	17
12	29
13	31
14	48
15	60
16	81
17	99
18	143
19	167
20	231
21	287
22	374
23	460
24	615
25	740
26	964
27	1194
28	1512
29	1856
30	2379
31	2877
32	3635
33	4460
34	5540
35	6759
36	8433
37	10192
38	12608
39	15335
40	18774
41	22726
42	27868
43	33525
44	40863
45	49292
46	59652
47	71694
48	86780
49	103818
50	125118
51	149778
52	179608

[1, 0, 1, 1, 2, 2, 5, 4, 8, 10, 15, 17, 29, 31, 48, 60, 81, 99, 143, 167, 231, 287, 374, 460, 615, 740, 964, 1194, 1512, 1856, 2379, 2877, 3635, 4460, 5540, 6759, 8433, 10192, 12608, 15335, 18774, 22726, 27868, 33525, 40863, 49292, 59652, 71694, 86780, 103818, 125118, 149778, 179608]

cp's OEIS Frontend

A318844 Expansion of Product_{k>=1} (1 + x^k)^(d(k)-1), where d(k) = number of divisors of k (A000005).

Table of values

List of values