A376414 - cp's OEIS frontend

A376414 Dirichlet inverse of sigma(n)-A003415(n), where sigma is the sum of divisors function and A003415 is the arithmetic derivative.

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

[1, -2, -3, 1, -5, 5, -7, 1, 2, 9, -11, -2, -13, 13, 14, 2, -17, -2, -19, -4, 20, 21, -23, -4, 4, 25, 2, -6, -29, -21, -31, 5, 32, 33, 34, 3, -37, 37, 38, -6, -41, -31, -43, -10, -8, 45, -47, -9, 6, -4, 50, -12, -53, -6, 54, -8, 56, 57, -59, 8, -61, 61, -12, 13, 64, -51, -67, -16, 68, -57, -71, 6, -73, 73, -8, -18]

cp's OEIS Frontend

A376414 Dirichlet inverse of sigma(n)-A003415(n), where sigma is the sum of divisors function and A003415 is the arithmetic derivative.

Table of values

List of values

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

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

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