A369978 - cp's OEIS frontend

A369978 Dirichlet inverse of sequence b(n) = 1+A083345(n), where A083345(n) = n' / gcd(n,n'), and n' stands for the arithmetic derivative of n, A003415.

n	a(n)
1	1
2	-2
3	-2
4	2
5	-2
6	2
7	-2
8	-4
9	1
10	0
11	-2
12	3
13	-2
14	-2
15	-1
16	9
17	-2
18	4
19	-2
20	9
21	-3
22	-6
23	-2
24	-8
25	1
26	-8
27	2
28	15
29	-2
30	12
31	-2
32	-18
33	-7
34	-12
35	-5
36	-14
37	-2
38	-14
39	-9
40	-22
41	-2
42	18
43	-2
44	27
45	10
46	-18
47	-2
48	20
49	1
50	10
51	-13
52	33
53	-2
54	-8
55	-9
56	-36
57	-15
58	-24
59	-2
60	-16
61	-2
62	-26
63	14
64	36
65	-11
66	30
67	-2
68	45
69	-19
70	16
71	-2
72	22
73	-2
74	-32
75	12
76	51
77	-11
78	36

[1, -2, -2, 2, -2, 2, -2, -4, 1, 0, -2, 3, -2, -2, -1, 9, -2, 4, -2, 9, -3, -6, -2, -8, 1, -8, 2, 15, -2, 12, -2, -18, -7, -12, -5, -14, -2, -14, -9, -22, -2, 18, -2, 27, 10, -18, -2, 20, 1, 10, -13, 33, -2, -8, -9, -36, -15, -24, -2, -16, -2, -26, 14, 36, -11, 30, -2, 45, -19, 16, -2, 22, -2, -32, 12, 51, -11, 36]

cp's OEIS Frontend

A369978 Dirichlet inverse of sequence b(n) = 1+A083345(n), where A083345(n) = n' / gcd(n,n'), and n' stands for the arithmetic derivative of n, A003415.

Table of values

List of values

n	a(n)
1	1
2	-2
3	-2
4	2
5	-2
6	2
7	-2
8	-4
9	1
10	0
11	-2
12	3
13	-2
14	-2
15	-1
16	9
17	-2
18	4
19	-2
20	9
21	-3
22	-6
23	-2
24	-8
25	1
26	-8
27	2
28	15
29	-2
30	12
31	-2
32	-18
33	-7
34	-12
35	-5
36	-14
37	-2
38	-14
39	-9
40	-22
41	-2
42	18
43	-2
44	27
45	10
46	-18
47	-2
48	20
49	1
50	10
51	-13
52	33
53	-2
54	-8
55	-9
56	-36
57	-15
58	-24
59	-2
60	-16
61	-2
62	-26
63	14
64	36
65	-11
66	30
67	-2
68	45
69	-19
70	16
71	-2
72	22
73	-2
74	-32
75	12
76	51
77	-11
78	36

n	a(n)
1	1
2	-2
3	-2
4	2
5	-2
6	2
7	-2
8	-4
9	1
10	0
11	-2
12	3
13	-2
14	-2
15	-1
16	9
17	-2
18	4
19	-2
20	9
21	-3
22	-6
23	-2
24	-8
25	1
26	-8
27	2
28	15
29	-2
30	12
31	-2
32	-18
33	-7
34	-12
35	-5
36	-14
37	-2
38	-14
39	-9
40	-22
41	-2
42	18
43	-2
44	27
45	10
46	-18
47	-2
48	20
49	1
50	10
51	-13
52	33
53	-2
54	-8
55	-9
56	-36
57	-15
58	-24
59	-2
60	-16
61	-2
62	-26
63	14
64	36
65	-11
66	30
67	-2
68	45
69	-19
70	16
71	-2
72	22
73	-2
74	-32
75	12
76	51
77	-11
78	36

n	a(n)
1	1
2	-2
3	-2
4	2
5	-2
6	2
7	-2
8	-4
9	1
10	0
11	-2
12	3
13	-2
14	-2
15	-1
16	9
17	-2
18	4
19	-2
20	9
21	-3
22	-6
23	-2
24	-8
25	1
26	-8
27	2
28	15
29	-2
30	12
31	-2
32	-18
33	-7
34	-12
35	-5
36	-14
37	-2
38	-14
39	-9
40	-22
41	-2
42	18
43	-2
44	27
45	10
46	-18
47	-2
48	20
49	1
50	10
51	-13
52	33
53	-2
54	-8
55	-9
56	-36
57	-15
58	-24
59	-2
60	-16
61	-2
62	-26
63	14
64	36
65	-11
66	30
67	-2
68	45
69	-19
70	16
71	-2
72	22
73	-2
74	-32
75	12
76	51
77	-11
78	36