A072779 - cp's OEIS frontend

A072779 a(n) = sigma_2(n) + phi(n) * sigma(n).

n	a(n)
1	2
2	8
3	18
4	35
5	50
6	74
7	98
8	145
9	169
10	202
11	242
12	322
13	338
14	394
15	452
16	589
17	578
18	689
19	722
20	882
21	884
22	970
23	1058
24	1330
25	1271
26	1354
27	1540
28	1722
29	1682
30	1876
31	1922
32	2373
33	2180
34	2314
35	2452
36	3003
37	2738
38	2890
39	3044
40	3650
41	3362
42	3652
43	3698
44	4242
45	4238
46	4234
47	4418

[2, 8, 18, 35, 50, 74, 98, 145, 169, 202, 242, 322, 338, 394, 452, 589, 578, 689, 722, 882, 884, 970, 1058, 1330, 1271, 1354, 1540, 1722, 1682, 1876, 1922, 2373, 2180, 2314, 2452, 3003, 2738, 2890, 3044, 3650, 3362, 3652, 3698, 4242, 4238, 4234, 4418]

cp's OEIS Frontend

A072779 a(n) = sigma_2(n) + phi(n) * sigma(n).

Table of values

List of values