A305809 - cp's OEIS frontend

A305809 Dirichlet convolution of A003415 (Arithmetic derivative) with itself.

n	a(n)
1	0
2	0
3	0
4	1
5	0
6	2
7	0
8	8
9	1
10	2
11	0
12	18
13	0
14	2
15	2
16	40
17	0
18	22
19	0
20	22
21	2
22	2
23	0
24	96
25	1
26	2
27	12
28	26
29	0
30	40
31	0
32	160
33	2
34	2
35	2
36	147
37	0
38	2
39	2
40	128
41	0
42	48
43	0
44	34
45	28
46	2
47	0
48	400
49	1
50	34
51	2
52	38
53	0
54	156
55	2
56	160
57	2
58	2
59	0
60	276
61	0
62	2
63	32
64	560
65	2
66	64
67	0
68	46
69	2
70	56
71	0
72	680
73	0
74	2
75	36
76	50
77	2
78	72
79	0
80	560
81	90
82	2
83	0
84	348
85	2
86	2
87	2
88	224
89	0
90	346
91	2
92	58
93	2
94	2
95	2
96	1440
97	0
98	46
99	40
100	267
101	0
102	88

[0, 0, 0, 1, 0, 2, 0, 8, 1, 2, 0, 18, 0, 2, 2, 40, 0, 22, 0, 22, 2, 2, 0, 96, 1, 2, 12, 26, 0, 40, 0, 160, 2, 2, 2, 147, 0, 2, 2, 128, 0, 48, 0, 34, 28, 2, 0, 400, 1, 34, 2, 38, 0, 156, 2, 160, 2, 2, 0, 276, 0, 2, 32, 560, 2, 64, 0, 46, 2, 56, 0, 680, 0, 2, 36, 50, 2, 72, 0, 560, 90, 2, 0, 348, 2, 2, 2, 224, 0, 346, 2, 58, 2, 2, 2, 1440, 0, 46, 40, 267, 0, 88]

cp's OEIS Frontend

A305809 Dirichlet convolution of A003415 (Arithmetic derivative) with itself.

Table of values

List of values