A085730 - cp's OEIS frontend

A085730 Euler's totient function applied to the sequence of prime powers.

n	a(n)
1	1
2	1
3	2
4	2
5	4
6	6
7	4
8	6
9	10
10	12
11	8
12	16
13	18
14	22
15	20
16	18
17	28
18	30
19	16
20	36
21	40
22	42
23	46
24	42
25	52
26	58
27	60
28	32
29	66
30	70
31	72
32	78
33	54
34	82
35	88
36	96
37	100
38	102
39	106
40	108
41	112
42	110
43	100
44	126
45	64
46	130
47	136
48	138
49	148
50	150
51	156
52	162
53	166
54	156
55	172
56	178
57	180
58	190
59	192
60	196
61	198
62	210

[1, 1, 2, 2, 4, 6, 4, 6, 10, 12, 8, 16, 18, 22, 20, 18, 28, 30, 16, 36, 40, 42, 46, 42, 52, 58, 60, 32, 66, 70, 72, 78, 54, 82, 88, 96, 100, 102, 106, 108, 112, 110, 100, 126, 64, 130, 136, 138, 148, 150, 156, 162, 166, 156, 172, 178, 180, 190, 192, 196, 198, 210]

cp's OEIS Frontend

A085730 Euler's totient function applied to the sequence of prime powers.

Table of values

List of values

n	a(n)
1	1
2	1
3	2
4	2
5	4
6	6
7	4
8	6
9	10
10	12
11	8
12	16
13	18
14	22
15	20
16	18
17	28
18	30
19	16
20	36
21	40
22	42
23	46
24	42
25	52
26	58
27	60
28	32
29	66
30	70
31	72
32	78
33	54
34	82
35	88
36	96
37	100
38	102
39	106
40	108
41	112
42	110
43	100
44	126
45	64
46	130
47	136
48	138
49	148
50	150
51	156
52	162
53	166
54	156
55	172
56	178
57	180
58	190
59	192
60	196
61	198
62	210

n	a(n)
1	1
2	1
3	2
4	2
5	4
6	6
7	4
8	6
9	10
10	12
11	8
12	16
13	18
14	22
15	20
16	18
17	28
18	30
19	16
20	36
21	40
22	42
23	46
24	42
25	52
26	58
27	60
28	32
29	66
30	70
31	72
32	78
33	54
34	82
35	88
36	96
37	100
38	102
39	106
40	108
41	112
42	110
43	100
44	126
45	64
46	130
47	136
48	138
49	148
50	150
51	156
52	162
53	166
54	156
55	172
56	178
57	180
58	190
59	192
60	196
61	198
62	210

n	a(n)
1	1
2	1
3	2
4	2
5	4
6	6
7	4
8	6
9	10
10	12
11	8
12	16
13	18
14	22
15	20
16	18
17	28
18	30
19	16
20	36
21	40
22	42
23	46
24	42
25	52
26	58
27	60
28	32
29	66
30	70
31	72
32	78
33	54
34	82
35	88
36	96
37	100
38	102
39	106
40	108
41	112
42	110
43	100
44	126
45	64
46	130
47	136
48	138
49	148
50	150
51	156
52	162
53	166
54	156
55	172
56	178
57	180
58	190
59	192
60	196
61	198
62	210