A349141 - cp's OEIS frontend

A349141 a(n) = Sum_{d|n} phi(n/d) * A348507(d), where A348507(n) = A003959(n) - n, and A003959 is fully multiplicative with a(p) = (p+1).

n	a(n)
1	0
2	1
3	1
4	6
5	1
6	9
7	1
8	26
9	9
10	13
11	1
12	44
13	1
14	17
15	15
16	98
17	1
18	57
19	1
20	68
21	19
22	25
23	1
24	176
25	15
26	29
27	57
28	92
29	1
30	105
31	1
32	342
33	27
34	37
35	23
36	252
37	1
38	41
39	31
40	280
41	1
42	141
43	1
44	140
45	111
46	49
47	1
48	636
49	21
50	125
51	39
52	164
53	1
54	309
55	31
56	384
57	43
58	61
59	1
60	480
61	1
62	65
63	147
64	1138
65	35
66	213
67	1
68	212
69	51
70	209
71	1
72	960
73	1
74	77
75	155
76	236
77	35
78	249
79	1
80	1028

[0, 1, 1, 6, 1, 9, 1, 26, 9, 13, 1, 44, 1, 17, 15, 98, 1, 57, 1, 68, 19, 25, 1, 176, 15, 29, 57, 92, 1, 105, 1, 342, 27, 37, 23, 252, 1, 41, 31, 280, 1, 141, 1, 140, 111, 49, 1, 636, 21, 125, 39, 164, 1, 309, 31, 384, 43, 61, 1, 480, 1, 65, 147, 1138, 35, 213, 1, 212, 51, 209, 1, 960, 1, 77, 155, 236, 35, 249, 1, 1028]

cp's OEIS Frontend

A349141 a(n) = Sum_{d|n} phi(n/d) * A348507(d), where A348507(n) = A003959(n) - n, and A003959 is fully multiplicative with a(p) = (p+1).

Table of values

List of values