A102302 - cp's OEIS frontend

A102302 Largest number < n/2 coprime to n.

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

[3, 3, 4, 3, 5, 5, 6, 5, 7, 7, 8, 7, 9, 9, 10, 9, 11, 11, 12, 11, 13, 13, 14, 13, 15, 15, 16, 15, 17, 17, 18, 17, 19, 19, 20, 19, 21, 21, 22, 21, 23, 23, 24, 23, 25, 25, 26, 25, 27, 27, 28, 27, 29, 29, 30, 29, 31, 31, 32, 31, 33, 33, 34, 33, 35, 35, 36, 35, 37, 37, 38, 37, 39, 39]

cp's OEIS Frontend

A102302 Largest number < n/2 coprime to n.

Table of values

List of values

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

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

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