A124218 - cp's OEIS frontend

A124218 a(n) is the m-th positive integer which is coprime to n, where phi(n) is number of positive integers which are <= n and are coprime to n, d(n) is the number of positive divisors of n and m = phi(n) if phi(n)|d(n), else m = d(n) mod phi(n).

n	a(n)
1	1
2	1
3	2
4	1
5	2
6	5
7	2
8	7
9	4
10	9
11	2
12	5
13	2
14	9
15	7
16	9
17	2
18	17
19	2
20	13
21	5
22	7
23	2
24	23
25	3
26	7
27	5
28	13
29	2
30	29
31	2
32	11
33	5
34	7
35	4
36	25
37	2
38	7
39	5
40	19
41	2
42	25
43	2
44	13
45	11
46	7
47	2
48	29
49	3
50	13
51	5
52	11
53	2
54	23
55	4
56	17
57	5
58	7
59	2
60	43
61	2
62	7
63	10
64	13
65	4
66	25
67	2
68	11
69	5
70	23
71	2
72	35
73	2
74	7
75	11
76	11
77	4
78	25
79	2
80	23
81	7
82	7
83	2
84	41
85	4
86	7
87	5
88	17
89	2
90	43
91	4

[1, 1, 2, 1, 2, 5, 2, 7, 4, 9, 2, 5, 2, 9, 7, 9, 2, 17, 2, 13, 5, 7, 2, 23, 3, 7, 5, 13, 2, 29, 2, 11, 5, 7, 4, 25, 2, 7, 5, 19, 2, 25, 2, 13, 11, 7, 2, 29, 3, 13, 5, 11, 2, 23, 4, 17, 5, 7, 2, 43, 2, 7, 10, 13, 4, 25, 2, 11, 5, 23, 2, 35, 2, 7, 11, 11, 4, 25, 2, 23, 7, 7, 2, 41, 4, 7, 5, 17, 2, 43, 4]

cp's OEIS Frontend

A124218 a(n) is the m-th positive integer which is coprime to n, where phi(n) is number of positive integers which are <= n and are coprime to n, d(n) is the number of positive divisors of n and m = phi(n) if phi(n)|d(n), else m = d(n) mod phi(n).

Table of values

List of values

n	a(n)
1	1
2	1
3	2
4	1
5	2
6	5
7	2
8	7
9	4
10	9
11	2
12	5
13	2
14	9
15	7
16	9
17	2
18	17
19	2
20	13
21	5
22	7
23	2
24	23
25	3
26	7
27	5
28	13
29	2
30	29
31	2
32	11
33	5
34	7
35	4
36	25
37	2
38	7
39	5
40	19
41	2
42	25
43	2
44	13
45	11
46	7
47	2
48	29
49	3
50	13
51	5
52	11
53	2
54	23
55	4
56	17
57	5
58	7
59	2
60	43
61	2
62	7
63	10
64	13
65	4
66	25
67	2
68	11
69	5
70	23
71	2
72	35
73	2
74	7
75	11
76	11
77	4
78	25
79	2
80	23
81	7
82	7
83	2
84	41
85	4
86	7
87	5
88	17
89	2
90	43
91	4

n	a(n)
1	1
2	1
3	2
4	1
5	2
6	5
7	2
8	7
9	4
10	9
11	2
12	5
13	2
14	9
15	7
16	9
17	2
18	17
19	2
20	13
21	5
22	7
23	2
24	23
25	3
26	7
27	5
28	13
29	2
30	29
31	2
32	11
33	5
34	7
35	4
36	25
37	2
38	7
39	5
40	19
41	2
42	25
43	2
44	13
45	11
46	7
47	2
48	29
49	3
50	13
51	5
52	11
53	2
54	23
55	4
56	17
57	5
58	7
59	2
60	43
61	2
62	7
63	10
64	13
65	4
66	25
67	2
68	11
69	5
70	23
71	2
72	35
73	2
74	7
75	11
76	11
77	4
78	25
79	2
80	23
81	7
82	7
83	2
84	41
85	4
86	7
87	5
88	17
89	2
90	43
91	4

n	a(n)
1	1
2	1
3	2
4	1
5	2
6	5
7	2
8	7
9	4
10	9
11	2
12	5
13	2
14	9
15	7
16	9
17	2
18	17
19	2
20	13
21	5
22	7
23	2
24	23
25	3
26	7
27	5
28	13
29	2
30	29
31	2
32	11
33	5
34	7
35	4
36	25
37	2
38	7
39	5
40	19
41	2
42	25
43	2
44	13
45	11
46	7
47	2
48	29
49	3
50	13
51	5
52	11
53	2
54	23
55	4
56	17
57	5
58	7
59	2
60	43
61	2
62	7
63	10
64	13
65	4
66	25
67	2
68	11
69	5
70	23
71	2
72	35
73	2
74	7
75	11
76	11
77	4
78	25
79	2
80	23
81	7
82	7
83	2
84	41
85	4
86	7
87	5
88	17
89	2
90	43
91	4