A367865 - cp's OEIS frontend

A367865 a(n) = Sum_{d|n} d * phi(d) * mu(d)^2.

n	a(n)
1	1
2	3
3	7
4	3
5	21
6	21
7	43
8	3
9	7
10	63
11	111
12	21
13	157
14	129
15	147
16	3
17	273
18	21
19	343
20	63
21	301
22	333
23	507
24	21
25	21
26	471
27	7
28	129
29	813
30	441
31	931
32	3
33	777
34	819
35	903
36	21
37	1333
38	1029
39	1099
40	63
41	1641
42	903
43	1807
44	333
45	147
46	1521
47	2163
48	21
49	43
50	63
51	1911
52	471
53	2757
54	21
55	2331
56	129
57	2401
58	2439

[1, 3, 7, 3, 21, 21, 43, 3, 7, 63, 111, 21, 157, 129, 147, 3, 273, 21, 343, 63, 301, 333, 507, 21, 21, 471, 7, 129, 813, 441, 931, 3, 777, 819, 903, 21, 1333, 1029, 1099, 63, 1641, 903, 1807, 333, 147, 1521, 2163, 21, 43, 63, 1911, 471, 2757, 21, 2331, 129, 2401, 2439]

cp's OEIS Frontend

A367865 a(n) = Sum_{d|n} d * phi(d) * mu(d)^2.

Table of values

List of values