A229340 - cp's OEIS frontend

A229340 Euler totient function of the arithmetic derivative of n: a(n) = phi(n'), a(1) = 0.

n	a(n)
1	0
2	1
3	1
4	2
5	1
6	4
7	1
8	4
9	2
10	6
11	1
12	8
13	1
14	6
15	4
16	16
17	1
18	12
19	1
20	8
21	4
22	12
23	1
24	20
25	4
26	8
27	18
28	16
29	1
30	30
31	1
32	32
33	6
34	18
35	4
36	16
37	1
38	12
39	8
40	32
41	1
42	40
43	1
44	16
45	24
46	20
47	1
48	48
49	6
50	24
51	8
52	24
53	1
54	54
55	8
56	44
57	10
58	30
59	1
60	44
61	1
62	20
63	32
64	64
65	6
66	60
67	1
68	24
69	12
70	58
71	1
72	48
73	1
74	24
75	40
76	32
77	6
78	70
79	1
80	80
81	36
82	42
83	1
84	60
85	10
86	24
87	16
88	48
89	1
90	80
91	8
92	32
93	16
94	42
95	8

[0, 1, 1, 2, 1, 4, 1, 4, 2, 6, 1, 8, 1, 6, 4, 16, 1, 12, 1, 8, 4, 12, 1, 20, 4, 8, 18, 16, 1, 30, 1, 32, 6, 18, 4, 16, 1, 12, 8, 32, 1, 40, 1, 16, 24, 20, 1, 48, 6, 24, 8, 24, 1, 54, 8, 44, 10, 30, 1, 44, 1, 20, 32, 64, 6, 60, 1, 24, 12, 58, 1, 48, 1, 24, 40, 32, 6, 70, 1, 80, 36, 42, 1, 60, 10, 24, 16, 48, 1, 80, 8, 32, 16, 42, 8]

cp's OEIS Frontend

A229340 Euler totient function of the arithmetic derivative of n: a(n) = phi(n'), a(1) = 0.

Table of values

List of values

n	a(n)
1	0
2	1
3	1
4	2
5	1
6	4
7	1
8	4
9	2
10	6
11	1
12	8
13	1
14	6
15	4
16	16
17	1
18	12
19	1
20	8
21	4
22	12
23	1
24	20
25	4
26	8
27	18
28	16
29	1
30	30
31	1
32	32
33	6
34	18
35	4
36	16
37	1
38	12
39	8
40	32
41	1
42	40
43	1
44	16
45	24
46	20
47	1
48	48
49	6
50	24
51	8
52	24
53	1
54	54
55	8
56	44
57	10
58	30
59	1
60	44
61	1
62	20
63	32
64	64
65	6
66	60
67	1
68	24
69	12
70	58
71	1
72	48
73	1
74	24
75	40
76	32
77	6
78	70
79	1
80	80
81	36
82	42
83	1
84	60
85	10
86	24
87	16
88	48
89	1
90	80
91	8
92	32
93	16
94	42
95	8

n	a(n)
1	0
2	1
3	1
4	2
5	1
6	4
7	1
8	4
9	2
10	6
11	1
12	8
13	1
14	6
15	4
16	16
17	1
18	12
19	1
20	8
21	4
22	12
23	1
24	20
25	4
26	8
27	18
28	16
29	1
30	30
31	1
32	32
33	6
34	18
35	4
36	16
37	1
38	12
39	8
40	32
41	1
42	40
43	1
44	16
45	24
46	20
47	1
48	48
49	6
50	24
51	8
52	24
53	1
54	54
55	8
56	44
57	10
58	30
59	1
60	44
61	1
62	20
63	32
64	64
65	6
66	60
67	1
68	24
69	12
70	58
71	1
72	48
73	1
74	24
75	40
76	32
77	6
78	70
79	1
80	80
81	36
82	42
83	1
84	60
85	10
86	24
87	16
88	48
89	1
90	80
91	8
92	32
93	16
94	42
95	8

n	a(n)
1	0
2	1
3	1
4	2
5	1
6	4
7	1
8	4
9	2
10	6
11	1
12	8
13	1
14	6
15	4
16	16
17	1
18	12
19	1
20	8
21	4
22	12
23	1
24	20
25	4
26	8
27	18
28	16
29	1
30	30
31	1
32	32
33	6
34	18
35	4
36	16
37	1
38	12
39	8
40	32
41	1
42	40
43	1
44	16
45	24
46	20
47	1
48	48
49	6
50	24
51	8
52	24
53	1
54	54
55	8
56	44
57	10
58	30
59	1
60	44
61	1
62	20
63	32
64	64
65	6
66	60
67	1
68	24
69	12
70	58
71	1
72	48
73	1
74	24
75	40
76	32
77	6
78	70
79	1
80	80
81	36
82	42
83	1
84	60
85	10
86	24
87	16
88	48
89	1
90	80
91	8
92	32
93	16
94	42
95	8