A046147 - cp's OEIS frontend

A046147 Triangle read by rows in which row n lists the primitive roots mod n (omitting numbers n without a primitive root).

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

[1, 2, 3, 2, 3, 5, 3, 5, 2, 5, 3, 7, 2, 6, 7, 8, 2, 6, 7, 11, 3, 5, 3, 5, 6, 7, 10, 11, 12, 14, 5, 11, 2, 3, 10, 13, 14, 15, 7, 13, 17, 19, 5, 7, 10, 11, 14, 15, 17, 19, 20, 21, 2, 3, 8, 12, 13, 17, 22, 23, 7, 11, 15, 19, 2, 5, 11, 14, 20, 23, 2, 3, 8, 10, 11, 14, 15, 18, 19, 21, 26]

cp's OEIS Frontend

A046147 Triangle read by rows in which row n lists the primitive roots mod n (omitting numbers n without a primitive root).

Table of values

List of values

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

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

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