A194855 - cp's OEIS frontend

A194855 Numbers n such that phi(n) divides Sum_{k=1..n} phi(k).

n	a(n)
1	1
2	2
3	3
4	4
5	6
6	7
7	10
8	15
9	16
10	17
11	18
12	20
13	22
14	25
15	35
16	36
17	37
18	38
19	54
20	92
21	140
22	162
23	212
24	303
25	320
26	455
27	456
28	974
29	1028
30	1136
31	1296
32	1297
33	1353
34	1869
35	2215
36	2405
37	2548
38	3065
39	3265
40	4230
41	4410
42	5584
43	7886
44	21420
45	23727
46	36001
47	60662
48	85722
49	100117
50	117094
51	173973

[1, 2, 3, 4, 6, 7, 10, 15, 16, 17, 18, 20, 22, 25, 35, 36, 37, 38, 54, 92, 140, 162, 212, 303, 320, 455, 456, 974, 1028, 1136, 1296, 1297, 1353, 1869, 2215, 2405, 2548, 3065, 3265, 4230, 4410, 5584, 7886, 21420, 23727, 36001, 60662, 85722, 100117, 117094, 173973]

cp's OEIS Frontend

A194855 Numbers n such that phi(n) divides Sum_{k=1..n} phi(k).

Table of values

List of values