cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A378844 Number of subsets of {1..n} whose arithmetic and harmonic means are both integers.

Table of values

n a(n)
1 1
2 2
3 3
4 4
5 5
6 8
7 9
8 10
9 11
10 13
11 14
12 18
13 19
14 21
15 27
16 28
17 29
18 48
19 49
20 71
21 75
22 78
23 79
24 103
25 104
26 105
27 106
28 203
29 204
30 325
31 326
32 327
33 530
34 533
35 795
36 1198
37 1199
38 1204

List of values

[1, 2, 3, 4, 5, 8, 9, 10, 11, 13, 14, 18, 19, 21, 27, 28, 29, 48, 49, 71, 75, 78, 79, 103, 104, 105, 106, 203, 204, 325, 326, 327, 530, 533, 795, 1198, 1199, 1204]