A215240 - cp's OEIS frontend

A215240 Sum of the numbers p such that phi(p) = n, where phi is Euler's totient function.

n	a(n)
1	3
2	13
3	0
4	35
5	0
6	48
7	0
8	105
9	0
10	33
11	0
12	166
13	0
14	0
15	0
16	231
17	0
18	138
19	0
20	218
21	0
22	69
23	0
24	621
25	0
26	0
27	0
28	87
29	0
30	93
31	0
32	581
33	0
34	0
35	0
36	655
37	0
38	0
39	0
40	833
41	0
42	276
43	0
44	299
45	0
46	141
47	0
48	1514
49	0
50	0
51	0
52	159
53	0
54	243
55	0
56	377
57	0
58	177
59	0
60	1114
61	0
62	0
63	0
64	1315
65	0
66	201
67	0
68	0
69	0
70	213
71	0

[3, 13, 0, 35, 0, 48, 0, 105, 0, 33, 0, 166, 0, 0, 0, 231, 0, 138, 0, 218, 0, 69, 0, 621, 0, 0, 0, 87, 0, 93, 0, 581, 0, 0, 0, 655, 0, 0, 0, 833, 0, 276, 0, 299, 0, 141, 0, 1514, 0, 0, 0, 159, 0, 243, 0, 377, 0, 177, 0, 1114, 0, 0, 0, 1315, 0, 201, 0, 0, 0, 213, 0]

cp's OEIS Frontend

A215240 Sum of the numbers p such that phi(p) = n, where phi is Euler's totient function.

Table of values

List of values