A339453 - cp's OEIS frontend

A339453 Number of subsets of {1..n} whose harmonic mean is an integer.

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	12
7	13
8	14
9	15
10	18
11	19
12	26
13	27
14	30
15	53
16	54
17	55
18	100
19	101
20	180
21	203
22	210
23	211
24	378
25	379
26	382
27	383
28	1092
29	1093
30	2020
31	2021
32	2022
33	3933
34	3956
35	6473
36	10226
37	10227
38	10266
39	10561
40	20948
41	20949

[1, 2, 3, 4, 5, 12, 13, 14, 15, 18, 19, 26, 27, 30, 53, 54, 55, 100, 101, 180, 203, 210, 211, 378, 379, 382, 383, 1092, 1093, 2020, 2021, 2022, 3933, 3956, 6473, 10226, 10227, 10266, 10561, 20948, 20949]

cp's OEIS Frontend

A339453 Number of subsets of {1..n} whose harmonic mean is an integer.

Table of values

List of values