A327171 - cp's OEIS frontend

A327171 a(n) = phi(n) * core(n), where phi is Euler totient function, and core gives the squarefree part of n.

n	a(n)
1	1
2	2
3	6
4	2
5	20
6	12
7	42
8	8
9	6
10	40
11	110
12	12
13	156
14	84
15	120
16	8
17	272
18	12
19	342
20	40
21	252
22	220
23	506
24	48
25	20
26	312
27	54
28	84
29	812
30	240
31	930
32	32
33	660
34	544
35	840
36	12
37	1332
38	684
39	936
40	160
41	1640
42	504
43	1806
44	220
45	120
46	1012
47	2162
48	48
49	42
50	40
51	1632
52	312
53	2756
54	108
55	2200
56	336
57	2052
58	1624
59	3422
60	240
61	3660
62	1860
63	252
64	32
65	3120
66	1320

[1, 2, 6, 2, 20, 12, 42, 8, 6, 40, 110, 12, 156, 84, 120, 8, 272, 12, 342, 40, 252, 220, 506, 48, 20, 312, 54, 84, 812, 240, 930, 32, 660, 544, 840, 12, 1332, 684, 936, 160, 1640, 504, 1806, 220, 120, 1012, 2162, 48, 42, 40, 1632, 312, 2756, 108, 2200, 336, 2052, 1624, 3422, 240, 3660, 1860, 252, 32, 3120, 1320]

cp's OEIS Frontend

A327171 a(n) = phi(n) * core(n), where phi is Euler totient function, and core gives the squarefree part of n.

Table of values

List of values