A378525 - cp's OEIS frontend

A378525 Dirichlet inverse of A378542, where A378542 is the sum of divisors d of n such that n/d has an even number of prime factors (counted with multiplicity).

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

[1, -2, -3, -1, -5, 5, -7, 2, -1, 9, -11, 5, -13, 13, 14, 0, -17, 5, -19, 7, 20, 21, -23, -5, -1, 25, 3, 9, -29, -20, -31, 0, 32, 33, 34, -4, -37, 37, 38, -9, -41, -30, -43, 13, 8, 45, -47, -2, -1, 7, 50, 15, -53, -5, 54, -13, 56, 57, -59, -28, -61, 61, 10, 0, 64, -50, -67, 19, 68, -56, -71, -7, -73, 73, 8, 21, 76]

cp's OEIS Frontend

A378525 Dirichlet inverse of A378542, where A378542 is the sum of divisors d of n such that n/d has an even number of prime factors (counted with multiplicity).

Table of values

List of values

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

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

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