A342415 - cp's OEIS frontend

A342415 a(n) = phi(n) / gcd(phi(n),A003415(n)), where A003415(n) is the arithmetic derivative of n, and phi is Euler totient function.

n	a(n)
1	1
2	1
3	2
4	1
5	4
6	2
7	6
8	1
9	1
10	4
11	10
12	1
13	12
14	2
15	1
16	1
17	16
18	2
19	18
20	1
21	6
22	10
23	22
24	2
25	2
26	4
27	2
28	3
29	28
30	8
31	30
32	1
33	10
34	16
35	2
36	1
37	36
38	6
39	3
40	4
41	40
42	12
43	42
44	5
45	8
46	22
47	46
48	1
49	3
50	4
51	8
52	3
53	52
54	2
55	5
56	6
57	18
58	28
59	58
60	4
61	60
62	10
63	12
64	1
65	8
66	20
67	66
68	4
69	22
70	24
71	70
72	2
73	72
74	12
75	8
76	9
77	10
78	24
79	78
80	2
81	1
82	40
83	82
84	6
85	32
86	14
87	7
88	2
89	88
90	8
91	18
92	11
93	30

[1, 1, 2, 1, 4, 2, 6, 1, 1, 4, 10, 1, 12, 2, 1, 1, 16, 2, 18, 1, 6, 10, 22, 2, 2, 4, 2, 3, 28, 8, 30, 1, 10, 16, 2, 1, 36, 6, 3, 4, 40, 12, 42, 5, 8, 22, 46, 1, 3, 4, 8, 3, 52, 2, 5, 6, 18, 28, 58, 4, 60, 10, 12, 1, 8, 20, 66, 4, 22, 24, 70, 2, 72, 12, 8, 9, 10, 24, 78, 2, 1, 40, 82, 6, 32, 14, 7, 2, 88, 8, 18, 11, 30]

cp's OEIS Frontend

A342415 a(n) = phi(n) / gcd(phi(n),A003415(n)), where A003415(n) is the arithmetic derivative of n, and phi is Euler totient function.

Table of values

List of values

n	a(n)
1	1
2	1
3	2
4	1
5	4
6	2
7	6
8	1
9	1
10	4
11	10
12	1
13	12
14	2
15	1
16	1
17	16
18	2
19	18
20	1
21	6
22	10
23	22
24	2
25	2
26	4
27	2
28	3
29	28
30	8
31	30
32	1
33	10
34	16
35	2
36	1
37	36
38	6
39	3
40	4
41	40
42	12
43	42
44	5
45	8
46	22
47	46
48	1
49	3
50	4
51	8
52	3
53	52
54	2
55	5
56	6
57	18
58	28
59	58
60	4
61	60
62	10
63	12
64	1
65	8
66	20
67	66
68	4
69	22
70	24
71	70
72	2
73	72
74	12
75	8
76	9
77	10
78	24
79	78
80	2
81	1
82	40
83	82
84	6
85	32
86	14
87	7
88	2
89	88
90	8
91	18
92	11
93	30

n	a(n)
1	1
2	1
3	2
4	1
5	4
6	2
7	6
8	1
9	1
10	4
11	10
12	1
13	12
14	2
15	1
16	1
17	16
18	2
19	18
20	1
21	6
22	10
23	22
24	2
25	2
26	4
27	2
28	3
29	28
30	8
31	30
32	1
33	10
34	16
35	2
36	1
37	36
38	6
39	3
40	4
41	40
42	12
43	42
44	5
45	8
46	22
47	46
48	1
49	3
50	4
51	8
52	3
53	52
54	2
55	5
56	6
57	18
58	28
59	58
60	4
61	60
62	10
63	12
64	1
65	8
66	20
67	66
68	4
69	22
70	24
71	70
72	2
73	72
74	12
75	8
76	9
77	10
78	24
79	78
80	2
81	1
82	40
83	82
84	6
85	32
86	14
87	7
88	2
89	88
90	8
91	18
92	11
93	30

n	a(n)
1	1
2	1
3	2
4	1
5	4
6	2
7	6
8	1
9	1
10	4
11	10
12	1
13	12
14	2
15	1
16	1
17	16
18	2
19	18
20	1
21	6
22	10
23	22
24	2
25	2
26	4
27	2
28	3
29	28
30	8
31	30
32	1
33	10
34	16
35	2
36	1
37	36
38	6
39	3
40	4
41	40
42	12
43	42
44	5
45	8
46	22
47	46
48	1
49	3
50	4
51	8
52	3
53	52
54	2
55	5
56	6
57	18
58	28
59	58
60	4
61	60
62	10
63	12
64	1
65	8
66	20
67	66
68	4
69	22
70	24
71	70
72	2
73	72
74	12
75	8
76	9
77	10
78	24
79	78
80	2
81	1
82	40
83	82
84	6
85	32
86	14
87	7
88	2
89	88
90	8
91	18
92	11
93	30