A002616 - cp's OEIS frontend

A002616 Reduced totient function (divided by 2).

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

[1, 1, 2, 1, 3, 1, 3, 2, 5, 1, 6, 3, 2, 2, 8, 3, 9, 2, 3, 5, 11, 1, 10, 6, 9, 3, 14, 2, 15, 4, 5, 8, 6, 3, 18, 9, 6, 2, 20, 3, 21, 5, 6, 11, 23, 2, 21, 10, 8, 6, 26, 9, 10, 3, 9, 14, 29, 2, 30, 15, 3, 8, 6, 5, 33, 8, 11, 6, 35, 3, 36, 18, 10, 9, 15, 6, 39, 2, 27, 20, 41, 3, 8, 21, 14, 5, 44, 6, 6]

cp's OEIS Frontend

A002616 Reduced totient function (divided by 2).

Table of values

List of values

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

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

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