A127413 - cp's OEIS frontend

A127413 a(n) = Sum_{1<=k<=n, gcd(k,n)=1} prime(k).

n	a(n)
1	2
2	2
3	5
4	7
5	17
6	13
7	41
8	35
9	59
10	47
11	129
12	61
13	197
14	113
15	163
16	177
17	381
18	161
19	501
20	245
21	393
22	345
23	791
24	311
25	805
26	515
27	813
28	569
29	1371
30	409
31	1593
32	895
33	1177
34	973
35	1519
36	793
37	2427
38	1271
39	1753
40	1201
41	3087
42	963
43	3447
44	1707
45	2101
46	1989
47	4227
48	1531
49	4091
50	2009
51	3299

[2, 2, 5, 7, 17, 13, 41, 35, 59, 47, 129, 61, 197, 113, 163, 177, 381, 161, 501, 245, 393, 345, 791, 311, 805, 515, 813, 569, 1371, 409, 1593, 895, 1177, 973, 1519, 793, 2427, 1271, 1753, 1201, 3087, 963, 3447, 1707, 2101, 1989, 4227, 1531, 4091, 2009, 3299]

cp's OEIS Frontend

A127413 a(n) = Sum_{1<=k<=n, gcd(k,n)=1} prime(k).

Table of values

List of values