A353691 - cp's OEIS frontend

A353691 a(n) is the least number k > n such that h(k)/h(n) is an integer, where h(n) is the harmonic mean of the divisors of n, or -1 if no such k exists.

n	a(n)
1	6
2	120
3	28
4	234
5	30
6	270
7	42
8	29792
9	252
10	1120
11	66
12	234
13	78
14	840
15	140
16	200
17	102
18	2016
19	114
20	1170
21	945
22	1320
23	138
24	1080
25	150
26	1560
27	756
28	270
29	174
30	3360
31	186
32	1272960
33	308
34	2040
35	210
36	9720
37	222
38	2280
39	364
40	148960
41	246
42	1890
43	258
44	2574
45	1260
46	2760
47	282
48	600
49	294

[6, 120, 28, 234, 30, 270, 42, 29792, 252, 1120, 66, 234, 78, 840, 140, 200, 102, 2016, 114, 1170, 945, 1320, 138, 1080, 150, 1560, 756, 270, 174, 3360, 186, 1272960, 308, 2040, 210, 9720, 222, 2280, 364, 148960, 246, 1890, 258, 2574, 1260, 2760, 282, 600, 294]

cp's OEIS Frontend

A353691 a(n) is the least number k > n such that h(k)/h(n) is an integer, where h(n) is the harmonic mean of the divisors of n, or -1 if no such k exists.

Table of values

List of values