A347132 - cp's OEIS frontend

A347132 a(n) = Sum_{d|n} A001615(n/d) * A003415(d), where A003415 is the arithmetic derivative and A001615 is Dedekind psi function.

n	a(n)
1	0
2	1
3	1
4	7
5	1
6	12
7	1
8	30
9	10
10	16
11	1
12	65
13	1
14	20
15	18
16	104
17	1
18	83
19	1
20	93
21	22
22	28
23	1
24	254
25	16
26	32
27	63
28	121
29	1
30	167
31	1
32	320
33	30
34	40
35	26
36	391
37	1
38	44
39	34
40	374
41	1
42	215
43	1
44	177
45	143
46	52
47	1
48	840
49	22
50	165
51	42
52	205
53	1
54	450
55	34
56	494
57	46
58	64
59	1
60	827
61	1
62	68
63	183
64	912
65	38
66	311
67	1
68	261
69	54
70	295
71	1
72	1430
73	1
74	80
75	197
76	289
77	38
78	359

[0, 1, 1, 7, 1, 12, 1, 30, 10, 16, 1, 65, 1, 20, 18, 104, 1, 83, 1, 93, 22, 28, 1, 254, 16, 32, 63, 121, 1, 167, 1, 320, 30, 40, 26, 391, 1, 44, 34, 374, 1, 215, 1, 177, 143, 52, 1, 840, 22, 165, 42, 205, 1, 450, 34, 494, 46, 64, 1, 827, 1, 68, 183, 912, 38, 311, 1, 261, 54, 295, 1, 1430, 1, 80, 197, 289, 38, 359]

cp's OEIS Frontend

A347132 a(n) = Sum_{d|n} A001615(n/d) * A003415(d), where A003415 is the arithmetic derivative and A001615 is Dedekind psi function.

Table of values

List of values