A348061 - cp's OEIS frontend

A348061 a(n) = Sum_{k=1..n, gcd(n,k) = 1} n / gcd(n,k-1).

n	a(n)
1	1
2	1
3	4
4	3
5	16
6	4
7	36
8	11
9	34
10	16
11	100
12	12
13	144
14	36
15	64
16	43
17	256
18	34
19	324
20	48
21	144
22	100
23	484
24	44
25	396
26	144
27	304
28	108
29	784
30	64
31	900
32	171
33	400
34	256
35	576
36	102
37	1296
38	324
39	576
40	176
41	1600
42	144
43	1764
44	300
45	544
46	484
47	2116
48	172
49	1758
50	396
51	1024
52	432
53	2704
54	304
55	1600
56	396
57	1296
58	784
59	3364
60	192

[1, 1, 4, 3, 16, 4, 36, 11, 34, 16, 100, 12, 144, 36, 64, 43, 256, 34, 324, 48, 144, 100, 484, 44, 396, 144, 304, 108, 784, 64, 900, 171, 400, 256, 576, 102, 1296, 324, 576, 176, 1600, 144, 1764, 300, 544, 484, 2116, 172, 1758, 396, 1024, 432, 2704, 304, 1600, 396, 1296, 784, 3364, 192]

cp's OEIS Frontend

A348061 a(n) = Sum_{k=1..n, gcd(n,k) = 1} n / gcd(n,k-1).

Table of values

List of values