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.

A325860 Number of subsets of {1..n} such that every pair of distinct elements has a different quotient.

Table of values

n a(n)
0 1
1 2
2 4
3 8
4 14
5 28
6 52
7 104
8 188
9 308
10 548
11 1096
12 1784
13 3568
14 6168
15 10404
16 16200
17 32400
18 49968
19 99936
20 155584
21 256944
22 433736
23 867472
24 1297504
25 2026288
26 3387216
27 5692056
28 8682912
29 17365824
30 25243200
31 50486400
32 78433056
33 125191968
34 206649216
35 328195632

List of values

[1, 2, 4, 8, 14, 28, 52, 104, 188, 308, 548, 1096, 1784, 3568, 6168, 10404, 16200, 32400, 49968, 99936, 155584, 256944, 433736, 867472, 1297504, 2026288, 3387216, 5692056, 8682912, 17365824, 25243200, 50486400, 78433056, 125191968, 206649216, 328195632]