A110601 - cp's OEIS frontend

A110601 a(n) = phi(n)*tau(n)^2, where phi is Euler's totient function and tau(n) is the number of divisors of n.

n	a(n)
1	1
2	4
3	8
4	18
5	16
6	32
7	24
8	64
9	54
10	64
11	40
12	144
13	48
14	96
15	128
16	200
17	64
18	216
19	72
20	288
21	192
22	160
23	88
24	512
25	180
26	192
27	288
28	432
29	112
30	512
31	120
32	576
33	320
34	256
35	384
36	972
37	144
38	288
39	384
40	1024
41	160
42	768
43	168
44	720
45	864
46	352
47	184
48	1600
49	378
50	720
51	512
52	864
53	208
54	1152
55	640

[1, 4, 8, 18, 16, 32, 24, 64, 54, 64, 40, 144, 48, 96, 128, 200, 64, 216, 72, 288, 192, 160, 88, 512, 180, 192, 288, 432, 112, 512, 120, 576, 320, 256, 384, 972, 144, 288, 384, 1024, 160, 768, 168, 720, 864, 352, 184, 1600, 378, 720, 512, 864, 208, 1152, 640]

cp's OEIS Frontend

A110601 a(n) = phi(n)*tau(n)^2, where phi is Euler's totient function and tau(n) is the number of divisors of n.

Table of values

List of values