A219028 - cp's OEIS frontend

A219028 Number of non-primitive roots for prime(n), less than prime(n).

n	a(n)
1	0
2	1
3	2
4	4
5	6
6	8
7	8
8	12
9	12
10	16
11	22
12	24
13	24
14	30
15	24
16	28
17	30
18	44
19	46
20	46
21	48
22	54
23	42
24	48
25	64
26	60
27	70
28	54
29	72
30	64
31	90
32	82
33	72
34	94
35	76
36	110
37	108
38	108
39	84
40	88
41	90
42	132
43	118
44	128
45	112
46	138
47	162
48	150
49	114
50	156
51	120
52	142
53	176
54	150
55	128
56	132
57	136
58	198
59	188
60	184
61	190

[0, 1, 2, 4, 6, 8, 8, 12, 12, 16, 22, 24, 24, 30, 24, 28, 30, 44, 46, 46, 48, 54, 42, 48, 64, 60, 70, 54, 72, 64, 90, 82, 72, 94, 76, 110, 108, 108, 84, 88, 90, 132, 118, 128, 112, 138, 162, 150, 114, 156, 120, 142, 176, 150, 128, 132, 136, 198, 188, 184, 190]

cp's OEIS Frontend

A219028 Number of non-primitive roots for prime(n), less than prime(n).

Table of values

List of values

n	a(n)
1	0
2	1
3	2
4	4
5	6
6	8
7	8
8	12
9	12
10	16
11	22
12	24
13	24
14	30
15	24
16	28
17	30
18	44
19	46
20	46
21	48
22	54
23	42
24	48
25	64
26	60
27	70
28	54
29	72
30	64
31	90
32	82
33	72
34	94
35	76
36	110
37	108
38	108
39	84
40	88
41	90
42	132
43	118
44	128
45	112
46	138
47	162
48	150
49	114
50	156
51	120
52	142
53	176
54	150
55	128
56	132
57	136
58	198
59	188
60	184
61	190

n	a(n)
1	0
2	1
3	2
4	4
5	6
6	8
7	8
8	12
9	12
10	16
11	22
12	24
13	24
14	30
15	24
16	28
17	30
18	44
19	46
20	46
21	48
22	54
23	42
24	48
25	64
26	60
27	70
28	54
29	72
30	64
31	90
32	82
33	72
34	94
35	76
36	110
37	108
38	108
39	84
40	88
41	90
42	132
43	118
44	128
45	112
46	138
47	162
48	150
49	114
50	156
51	120
52	142
53	176
54	150
55	128
56	132
57	136
58	198
59	188
60	184
61	190

n	a(n)
1	0
2	1
3	2
4	4
5	6
6	8
7	8
8	12
9	12
10	16
11	22
12	24
13	24
14	30
15	24
16	28
17	30
18	44
19	46
20	46
21	48
22	54
23	42
24	48
25	64
26	60
27	70
28	54
29	72
30	64
31	90
32	82
33	72
34	94
35	76
36	110
37	108
38	108
39	84
40	88
41	90
42	132
43	118
44	128
45	112
46	138
47	162
48	150
49	114
50	156
51	120
52	142
53	176
54	150
55	128
56	132
57	136
58	198
59	188
60	184
61	190