A378535 - cp's OEIS frontend

A378535 Möbius transform 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	1
3	2
4	3
5	4
6	3
7	6
8	5
9	7
10	5
11	10
12	7
13	12
14	7
15	9
16	11
17	16
18	9
19	18
20	13
21	13
22	11
23	22
24	13
25	21
26	13
27	20
28	19
29	28
30	15
31	30
32	21
33	21
34	17
35	25
36	23
37	36
38	19
39	25
40	23
41	40
42	21
43	42
44	31
45	30
46	23
47	46
48	27
49	43
50	25
51	33
52	37
53	52
54	27
55	41
56	33
57	37
58	29
59	58
60	33
61	60
62	31
63	44
64	43
65	49
66	33
67	66
68	49
69	45
70	35
71	70
72	41
73	72
74	37
75	46
76	55
77	61
78	39
79	78
80	49
81	61
82	41
83	82

[1, 1, 2, 3, 4, 3, 6, 5, 7, 5, 10, 7, 12, 7, 9, 11, 16, 9, 18, 13, 13, 11, 22, 13, 21, 13, 20, 19, 28, 15, 30, 21, 21, 17, 25, 23, 36, 19, 25, 23, 40, 21, 42, 31, 30, 23, 46, 27, 43, 25, 33, 37, 52, 27, 41, 33, 37, 29, 58, 33, 60, 31, 44, 43, 49, 33, 66, 49, 45, 35, 70, 41, 72, 37, 46, 55, 61, 39, 78, 49, 61, 41, 82]

cp's OEIS Frontend

A378535 Möbius transform 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	1
3	2
4	3
5	4
6	3
7	6
8	5
9	7
10	5
11	10
12	7
13	12
14	7
15	9
16	11
17	16
18	9
19	18
20	13
21	13
22	11
23	22
24	13
25	21
26	13
27	20
28	19
29	28
30	15
31	30
32	21
33	21
34	17
35	25
36	23
37	36
38	19
39	25
40	23
41	40
42	21
43	42
44	31
45	30
46	23
47	46
48	27
49	43
50	25
51	33
52	37
53	52
54	27
55	41
56	33
57	37
58	29
59	58
60	33
61	60
62	31
63	44
64	43
65	49
66	33
67	66
68	49
69	45
70	35
71	70
72	41
73	72
74	37
75	46
76	55
77	61
78	39
79	78
80	49
81	61
82	41
83	82

n	a(n)
1	1
2	1
3	2
4	3
5	4
6	3
7	6
8	5
9	7
10	5
11	10
12	7
13	12
14	7
15	9
16	11
17	16
18	9
19	18
20	13
21	13
22	11
23	22
24	13
25	21
26	13
27	20
28	19
29	28
30	15
31	30
32	21
33	21
34	17
35	25
36	23
37	36
38	19
39	25
40	23
41	40
42	21
43	42
44	31
45	30
46	23
47	46
48	27
49	43
50	25
51	33
52	37
53	52
54	27
55	41
56	33
57	37
58	29
59	58
60	33
61	60
62	31
63	44
64	43
65	49
66	33
67	66
68	49
69	45
70	35
71	70
72	41
73	72
74	37
75	46
76	55
77	61
78	39
79	78
80	49
81	61
82	41
83	82

n	a(n)
1	1
2	1
3	2
4	3
5	4
6	3
7	6
8	5
9	7
10	5
11	10
12	7
13	12
14	7
15	9
16	11
17	16
18	9
19	18
20	13
21	13
22	11
23	22
24	13
25	21
26	13
27	20
28	19
29	28
30	15
31	30
32	21
33	21
34	17
35	25
36	23
37	36
38	19
39	25
40	23
41	40
42	21
43	42
44	31
45	30
46	23
47	46
48	27
49	43
50	25
51	33
52	37
53	52
54	27
55	41
56	33
57	37
58	29
59	58
60	33
61	60
62	31
63	44
64	43
65	49
66	33
67	66
68	49
69	45
70	35
71	70
72	41
73	72
74	37
75	46
76	55
77	61
78	39
79	78
80	49
81	61
82	41
83	82