A329071 - cp's OEIS frontend

A329071 a(n) = phi(A275314(n)) - mu(A275314(n)), where A275314(n) is Euler's gradus function.

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

[0, 2, 3, 3, 5, 2, 7, 2, 5, 1, 11, 5, 13, 4, 7, 5, 17, 1, 19, 7, 6, 4, 23, 1, 6, 5, 7, 6, 29, 4, 31, 1, 13, 6, 11, 7, 37, 8, 7, 4, 41, 3, 43, 13, 6, 8, 47, 7, 13, 3, 19, 7, 53, 4, 7, 3, 11, 9, 59, 6, 61, 16, 11, 7, 17, 5, 67, 19, 20, 4, 71, 4, 73, 17, 11, 11]

cp's OEIS Frontend

A329071 a(n) = phi(A275314(n)) - mu(A275314(n)), where A275314(n) is Euler's gradus function.

Table of values

List of values

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

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

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