A348011 - cp's OEIS frontend

A348011 a(n) = phi(n^2) * Sum_{d|n} 2^omega(d) / d.

n	a(n)
1	1
2	4
3	10
4	20
5	28
6	40
7	54
8	88
9	102
10	112
11	130
12	200
13	180
14	216
15	280
16	368
17	304
18	408
19	378
20	560
21	540
22	520
23	550
24	880
25	740
26	720
27	954
28	1080
29	868
30	1120
31	990
32	1504
33	1300
34	1216
35	1512
36	2040
37	1404
38	1512
39	1800
40	2464
41	1720
42	2160
43	1890
44	2600
45	2856
46	2200
47	2254
48	3680
49	2730
50	2960

[1, 4, 10, 20, 28, 40, 54, 88, 102, 112, 130, 200, 180, 216, 280, 368, 304, 408, 378, 560, 540, 520, 550, 880, 740, 720, 954, 1080, 868, 1120, 990, 1504, 1300, 1216, 1512, 2040, 1404, 1512, 1800, 2464, 1720, 2160, 1890, 2600, 2856, 2200, 2254, 3680, 2730, 2960]

cp's OEIS Frontend

A348011 a(n) = phi(n^2) * Sum_{d|n} 2^omega(d) / d.

Table of values

List of values