A380160 - cp's OEIS frontend

A380160 a(n) is the value of the Euler totient function when applied to the powerful part of n.

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

[1, 1, 1, 2, 1, 1, 1, 4, 6, 1, 1, 2, 1, 1, 1, 8, 1, 6, 1, 2, 1, 1, 1, 4, 20, 1, 18, 2, 1, 1, 1, 16, 1, 1, 1, 12, 1, 1, 1, 4, 1, 1, 1, 2, 6, 1, 1, 8, 42, 20, 1, 2, 1, 18, 1, 4, 1, 1, 1, 2, 1, 1, 6, 32, 1, 1, 1, 2, 1, 1, 1, 24, 1, 1, 20, 2, 1, 1, 1, 8, 54, 1, 1, 2]

cp's OEIS Frontend

A380160 a(n) is the value of the Euler totient function when applied to the powerful part of n.

Table of values

List of values

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

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

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