A069056 - cp's OEIS frontend

A069056 Numbers k such that Sum_{d|k} d^2*mu(d) divides k^2.

n	a(n)
1	1
2	12
3	24
4	36
5	48
6	72
7	96
8	108
9	120
10	144
11	192
12	216
13	240
14	288
15	324
16	336
17	360
18	384
19	432
20	480
21	576
22	600
23	648
24	672
25	720
26	768
27	864
28	960
29	972
30	1008
31	1080
32	1152
33	1200
34	1296
35	1344
36	1440
37	1536
38	1728
39	1800
40	1920
41	1944
42	2016
43	2160
44	2304
45	2352
46	2400
47	2448
48	2592
49	2688

[1, 12, 24, 36, 48, 72, 96, 108, 120, 144, 192, 216, 240, 288, 324, 336, 360, 384, 432, 480, 576, 600, 648, 672, 720, 768, 864, 960, 972, 1008, 1080, 1152, 1200, 1296, 1344, 1440, 1536, 1728, 1800, 1920, 1944, 2016, 2160, 2304, 2352, 2400, 2448, 2592, 2688]

cp's OEIS Frontend

A069056 Numbers k such that Sum_{d|k} d^2*mu(d) divides k^2.

Table of values

List of values