A242029 - cp's OEIS frontend

A242029 Number of anti-divisors m <= n of n that are coprime to n.

n	a(n)
1	0
2	0
3	1
4	1
5	2
6	0
7	3
8	2
9	1
10	2
11	3
12	1
13	4
14	2
15	1
16	2
17	5
18	2
19	3
20	2
21	1
22	4
23	5
24	1
25	4
26	2
27	3
28	4
29	3
30	0
31	5
32	6
33	3
34	2
35	3
36	0
37	5
38	6
39	3
40	3
41	4
42	2
43	5
44	2
45	3
46	4
47	5
48	2
49	5
50	4
51	1
52	6
53	7
54	0
55	3
56	2
57	3
58	6
59	7
60	3
61	4
62	4
63	3
64	2
65	3
66	2
67	9
68	6
69	1
70	2
71	5
72	4
73	7
74	4
75	1
76	4
77	7
78	2
79	3
80	4
81	3
82	6
83	7
84	1
85	6
86	4
87	5

[0, 0, 1, 1, 2, 0, 3, 2, 1, 2, 3, 1, 4, 2, 1, 2, 5, 2, 3, 2, 1, 4, 5, 1, 4, 2, 3, 4, 3, 0, 5, 6, 3, 2, 3, 0, 5, 6, 3, 3, 4, 2, 5, 2, 3, 4, 5, 2, 5, 4, 1, 6, 7, 0, 3, 2, 3, 6, 7, 3, 4, 4, 3, 2, 3, 2, 9, 6, 1, 2, 5, 4, 7, 4, 1, 4, 7, 2, 3, 4, 3, 6, 7, 1, 6, 4, 5]

cp's OEIS Frontend

A242029 Number of anti-divisors m <= n of n that are coprime to n.

Table of values

List of values

n	a(n)
1	0
2	0
3	1
4	1
5	2
6	0
7	3
8	2
9	1
10	2
11	3
12	1
13	4
14	2
15	1
16	2
17	5
18	2
19	3
20	2
21	1
22	4
23	5
24	1
25	4
26	2
27	3
28	4
29	3
30	0
31	5
32	6
33	3
34	2
35	3
36	0
37	5
38	6
39	3
40	3
41	4
42	2
43	5
44	2
45	3
46	4
47	5
48	2
49	5
50	4
51	1
52	6
53	7
54	0
55	3
56	2
57	3
58	6
59	7
60	3
61	4
62	4
63	3
64	2
65	3
66	2
67	9
68	6
69	1
70	2
71	5
72	4
73	7
74	4
75	1
76	4
77	7
78	2
79	3
80	4
81	3
82	6
83	7
84	1
85	6
86	4
87	5

n	a(n)
1	0
2	0
3	1
4	1
5	2
6	0
7	3
8	2
9	1
10	2
11	3
12	1
13	4
14	2
15	1
16	2
17	5
18	2
19	3
20	2
21	1
22	4
23	5
24	1
25	4
26	2
27	3
28	4
29	3
30	0
31	5
32	6
33	3
34	2
35	3
36	0
37	5
38	6
39	3
40	3
41	4
42	2
43	5
44	2
45	3
46	4
47	5
48	2
49	5
50	4
51	1
52	6
53	7
54	0
55	3
56	2
57	3
58	6
59	7
60	3
61	4
62	4
63	3
64	2
65	3
66	2
67	9
68	6
69	1
70	2
71	5
72	4
73	7
74	4
75	1
76	4
77	7
78	2
79	3
80	4
81	3
82	6
83	7
84	1
85	6
86	4
87	5

n	a(n)
1	0
2	0
3	1
4	1
5	2
6	0
7	3
8	2
9	1
10	2
11	3
12	1
13	4
14	2
15	1
16	2
17	5
18	2
19	3
20	2
21	1
22	4
23	5
24	1
25	4
26	2
27	3
28	4
29	3
30	0
31	5
32	6
33	3
34	2
35	3
36	0
37	5
38	6
39	3
40	3
41	4
42	2
43	5
44	2
45	3
46	4
47	5
48	2
49	5
50	4
51	1
52	6
53	7
54	0
55	3
56	2
57	3
58	6
59	7
60	3
61	4
62	4
63	3
64	2
65	3
66	2
67	9
68	6
69	1
70	2
71	5
72	4
73	7
74	4
75	1
76	4
77	7
78	2
79	3
80	4
81	3
82	6
83	7
84	1
85	6
86	4
87	5