A322447 - cp's OEIS frontend

A322447 Numbers k where Sum_{d | k} 1/rad(d) increases to a record.

n	a(n)
1	1
2	2
3	4
4	8
5	12
6	16
7	24
8	32
9	48
10	72
11	96
12	144
13	192
14	288
15	384
16	576
17	864
18	1152
19	1728
20	2304
21	3456
22	4608
23	5184
24	6912
25	10368
26	13824
27	20736
28	27648
29	41472
30	55296
31	62208
32	82944
33	124416
34	165888
35	207360
36	248832
37	331776
38	373248
39	414720
40	497664
41	622080
42	746496
43	829440
44	995328

[1, 2, 4, 8, 12, 16, 24, 32, 48, 72, 96, 144, 192, 288, 384, 576, 864, 1152, 1728, 2304, 3456, 4608, 5184, 6912, 10368, 13824, 20736, 27648, 41472, 55296, 62208, 82944, 124416, 165888, 207360, 248832, 331776, 373248, 414720, 497664, 622080, 746496, 829440, 995328]

cp's OEIS Frontend

A322447 Numbers k where Sum_{d | k} 1/rad(d) increases to a record.

Table of values

List of values