A333297 - cp's OEIS frontend

A333297 a(n) = Sum_{i=1..n, j=1..n, gcd(i,j)=1} i.

n	a(n)
1	1
2	4
3	13
4	25
5	55
6	73
7	136
8	184
9	265
10	325
11	490
12	562
13	796
14	922
15	1102
16	1294
17	1702
18	1864
19	2377
20	2617
21	2995
22	3325
23	4084
24	4372
25	5122
26	5590
27	6319
28	6823
29	8041
30	8401
31	9796
32	10564
33	11554
34	12370
35	13630
36	14278
37	16276
38	17302
39	18706
40	19666
41	22126
42	22882
43	25591
44	26911
45	28531
46	30049
47	33292
48	34444
49	37531
50	39031

[1, 4, 13, 25, 55, 73, 136, 184, 265, 325, 490, 562, 796, 922, 1102, 1294, 1702, 1864, 2377, 2617, 2995, 3325, 4084, 4372, 5122, 5590, 6319, 6823, 8041, 8401, 9796, 10564, 11554, 12370, 13630, 14278, 16276, 17302, 18706, 19666, 22126, 22882, 25591, 26911, 28531, 30049, 33292, 34444, 37531, 39031]

cp's OEIS Frontend

A333297 a(n) = Sum_{i=1..n, j=1..n, gcd(i,j)=1} i.

Table of values

List of values