A382768 - cp's OEIS frontend

A382768 Number of k < n that are coprime to n and neither squarefree nor prime powers.

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	1
14	0
15	0
16	0
17	1
18	0
19	2
20	0
21	1
22	0
23	3
24	0
25	3
26	0
27	1
28	0
29	5
30	0
31	5
32	0
33	2
34	0
35	3
36	0
37	6
38	0
39	2
40	0
41	7
42	0
43	7
44	0
45	2
46	1
47	9
48	0
49	9
50	0
51	5
52	1
53	12
54	0
55	8
56	1
57	7
58	1
59	14
60	0
61	15
62	1
63	5
64	2
65	10
66	0
67	16
68	2
69	8
70	0
71	17
72	0
73	18
74	2
75	5
76	3
77	16
78	0
79	20
80	1
81	10
82	3
83	21
84	0

[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 2, 0, 1, 0, 3, 0, 3, 0, 1, 0, 5, 0, 5, 0, 2, 0, 3, 0, 6, 0, 2, 0, 7, 0, 7, 0, 2, 1, 9, 0, 9, 0, 5, 1, 12, 0, 8, 1, 7, 1, 14, 0, 15, 1, 5, 2, 10, 0, 16, 2, 8, 0, 17, 0, 18, 2, 5, 3, 16, 0, 20, 1, 10, 3, 21, 0]

cp's OEIS Frontend

A382768 Number of k < n that are coprime to n and neither squarefree nor prime powers.

Table of values

List of values

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	1
14	0
15	0
16	0
17	1
18	0
19	2
20	0
21	1
22	0
23	3
24	0
25	3
26	0
27	1
28	0
29	5
30	0
31	5
32	0
33	2
34	0
35	3
36	0
37	6
38	0
39	2
40	0
41	7
42	0
43	7
44	0
45	2
46	1
47	9
48	0
49	9
50	0
51	5
52	1
53	12
54	0
55	8
56	1
57	7
58	1
59	14
60	0
61	15
62	1
63	5
64	2
65	10
66	0
67	16
68	2
69	8
70	0
71	17
72	0
73	18
74	2
75	5
76	3
77	16
78	0
79	20
80	1
81	10
82	3
83	21
84	0

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	1
14	0
15	0
16	0
17	1
18	0
19	2
20	0
21	1
22	0
23	3
24	0
25	3
26	0
27	1
28	0
29	5
30	0
31	5
32	0
33	2
34	0
35	3
36	0
37	6
38	0
39	2
40	0
41	7
42	0
43	7
44	0
45	2
46	1
47	9
48	0
49	9
50	0
51	5
52	1
53	12
54	0
55	8
56	1
57	7
58	1
59	14
60	0
61	15
62	1
63	5
64	2
65	10
66	0
67	16
68	2
69	8
70	0
71	17
72	0
73	18
74	2
75	5
76	3
77	16
78	0
79	20
80	1
81	10
82	3
83	21
84	0

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	1
14	0
15	0
16	0
17	1
18	0
19	2
20	0
21	1
22	0
23	3
24	0
25	3
26	0
27	1
28	0
29	5
30	0
31	5
32	0
33	2
34	0
35	3
36	0
37	6
38	0
39	2
40	0
41	7
42	0
43	7
44	0
45	2
46	1
47	9
48	0
49	9
50	0
51	5
52	1
53	12
54	0
55	8
56	1
57	7
58	1
59	14
60	0
61	15
62	1
63	5
64	2
65	10
66	0
67	16
68	2
69	8
70	0
71	17
72	0
73	18
74	2
75	5
76	3
77	16
78	0
79	20
80	1
81	10
82	3
83	21
84	0