A339820 - cp's OEIS frontend

A339820 a(n) = phi(A019565(n)), where phi is Euler totient function.

n	a(n)
0	1
1	1
2	2
3	2
4	4
5	4
6	8
7	8
8	6
9	6
10	12
11	12
12	24
13	24
14	48
15	48
16	10
17	10
18	20
19	20
20	40
21	40
22	80
23	80
24	60
25	60
26	120
27	120
28	240
29	240
30	480
31	480
32	12
33	12
34	24
35	24
36	48
37	48
38	96
39	96
40	72
41	72
42	144
43	144
44	288
45	288
46	576
47	576
48	120
49	120
50	240
51	240
52	480
53	480
54	960
55	960
56	720
57	720
58	1440
59	1440
60	2880
61	2880
62	5760
63	5760
64	16
65	16
66	32
67	32
68	64
69	64
70	128
71	128

[1, 1, 2, 2, 4, 4, 8, 8, 6, 6, 12, 12, 24, 24, 48, 48, 10, 10, 20, 20, 40, 40, 80, 80, 60, 60, 120, 120, 240, 240, 480, 480, 12, 12, 24, 24, 48, 48, 96, 96, 72, 72, 144, 144, 288, 288, 576, 576, 120, 120, 240, 240, 480, 480, 960, 960, 720, 720, 1440, 1440, 2880, 2880, 5760, 5760, 16, 16, 32, 32, 64, 64, 128, 128]

cp's OEIS Frontend

A339820 a(n) = phi(A019565(n)), where phi is Euler totient function.

Table of values

List of values