A325212 - cp's OEIS frontend

A325212 a(1) = 1; a(n) = Sum_{d|n, d sigma(n/d) * a(d), where sigma = A000203.

n	a(n)
1	1
2	3
3	4
4	16
5	6
6	36
7	8
8	84
9	29
10	54
11	12
12	264
13	14
14	72
15	72
16	440
17	18
18	357
19	20
20	396
21	96
22	108
23	24
24	1776
25	67
26	126
27	208
28	528
29	30
30	936
31	32
32	2304
33	144
34	162
35	144
36	3290
37	38
38	180
39	168
40	2664
41	42
42	1248
43	44
44	792
45	714
46	216
47	48
48	11360
49	121
50	819
51	216
52	924
53	54
54	3264
55	216
56	3552
57	240
58	270
59	60
60	8880

[1, 3, 4, 16, 6, 36, 8, 84, 29, 54, 12, 264, 14, 72, 72, 440, 18, 357, 20, 396, 96, 108, 24, 1776, 67, 126, 208, 528, 30, 936, 32, 2304, 144, 162, 144, 3290, 38, 180, 168, 2664, 42, 1248, 44, 792, 714, 216, 48, 11360, 121, 819, 216, 924, 54, 3264, 216, 3552, 240, 270, 60, 8880]

cp's OEIS Frontend

A325212 a(1) = 1; a(n) = Sum_{d|n, d sigma(n/d) * a(d), where sigma = A000203.

Table of values

List of values