A349338 - cp's OEIS frontend

A349338 Dirichlet convolution of A000010 (Euler totient phi) with A080339 (characteristic function of noncomposite numbers).

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

[1, 2, 3, 3, 5, 5, 7, 6, 8, 9, 11, 8, 13, 13, 14, 12, 17, 14, 19, 14, 20, 21, 23, 16, 24, 25, 24, 20, 29, 22, 31, 24, 32, 33, 34, 22, 37, 37, 38, 28, 41, 32, 43, 32, 38, 45, 47, 32, 48, 44, 50, 38, 53, 42, 54, 40, 56, 57, 59, 36, 61, 61, 54, 48, 64, 52, 67, 50, 68, 58, 71, 44, 73, 73, 68, 56, 76, 62, 79, 56, 72, 81]

cp's OEIS Frontend

A349338 Dirichlet convolution of A000010 (Euler totient phi) with A080339 (characteristic function of noncomposite numbers).

Table of values

List of values

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

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

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