A349181 - cp's OEIS frontend

A349181 Powerful harmonic numbers: numbers k such that the set of powerful divisors of k that are larger than 1 has more than one element and that the harmonic mean of this set is an integer.

n	a(n)
1	100
2	300
3	700
4	1100
5	1225
6	1300
7	1700
8	1900
9	2100
10	2300
11	2450
12	2900
13	3100
14	3300
15	3675
16	3700
17	3900
18	4100
19	4225
20	4300
21	4700
22	5100
23	5300
24	5700
25	5900
26	6100
27	6700
28	6900
29	7100
30	7300
31	7350
32	7700
33	7900
34	8300
35	8450
36	8700
37	8900
38	9100
39	9300
40	9700
41	10100
42	10300
43	10700
44	10900

[100, 300, 700, 1100, 1225, 1300, 1700, 1900, 2100, 2300, 2450, 2900, 3100, 3300, 3675, 3700, 3900, 4100, 4225, 4300, 4700, 5100, 5300, 5700, 5900, 6100, 6700, 6900, 7100, 7300, 7350, 7700, 7900, 8300, 8450, 8700, 8900, 9100, 9300, 9700, 10100, 10300, 10700, 10900]

cp's OEIS Frontend

A349181 Powerful harmonic numbers: numbers k such that the set of powerful divisors of k that are larger than 1 has more than one element and that the harmonic mean of this set is an integer.

Table of values

List of values