A115015 - cp's OEIS frontend

A115015 Sum_{i=1..n} (gcd(7,i)=1) i.

n	a(n)
1	1
2	3
3	6
4	10
5	15
6	21
7	21
8	29
9	38
10	48
11	59
12	71
13	84
14	84
15	99
16	115
17	132
18	150
19	169
20	189
21	189
22	211
23	234
24	258
25	283
26	309
27	336
28	336
29	365
30	395
31	426
32	458
33	491
34	525
35	525
36	561
37	598
38	636
39	675
40	715
41	756
42	756
43	799
44	843
45	888
46	934
47	981
48	1029
49	1029
50	1079
51	1130
52	1182
53	1235
54	1289
55	1344
56	1344

[1, 3, 6, 10, 15, 21, 21, 29, 38, 48, 59, 71, 84, 84, 99, 115, 132, 150, 169, 189, 189, 211, 234, 258, 283, 309, 336, 336, 365, 395, 426, 458, 491, 525, 525, 561, 598, 636, 675, 715, 756, 756, 799, 843, 888, 934, 981, 1029, 1029, 1079, 1130, 1182, 1235, 1289, 1344, 1344]

cp's OEIS Frontend

A115015 Sum_{i=1..n} (gcd(7,i)=1) i.

Table of values

List of values