A066760 - cp's OEIS frontend

A066760 a(n) = Sum_{1<=k<=n, k is not a divisor of n and k is not coprime to n} k.

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	4
7	0
8	6
9	6
10	18
11	0
12	27
13	0
14	40
15	37
16	42
17	0
18	79
19	0
20	89
21	74
22	108
23	0
24	145
25	45
26	154
27	96
28	183
29	0
30	274
31	0
32	210
33	184
34	270
35	163
36	360
37	0
38	340
39	257
40	411
41	0
42	556
43	0
44	467
45	418
46	504
47	0
48	669
49	140
50	683
51	439
52	657
53	0
54	880
55	369
56	805
57	548
58	810
59	0
60	1183
61	0
62	928
63	779
64	930
65	502

[0, 0, 0, 0, 0, 4, 0, 6, 6, 18, 0, 27, 0, 40, 37, 42, 0, 79, 0, 89, 74, 108, 0, 145, 45, 154, 96, 183, 0, 274, 0, 210, 184, 270, 163, 360, 0, 340, 257, 411, 0, 556, 0, 467, 418, 504, 0, 669, 140, 683, 439, 657, 0, 880, 369, 805, 548, 810, 0, 1183, 0, 928, 779, 930, 502]

cp's OEIS Frontend

A066760 a(n) = Sum_{1<=k<=n, k is not a divisor of n and k is not coprime to n} k.

Table of values

List of values