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.

A087081 Sum of the elements in the coprime subsets of the integers 1 to n.

Table of values

n a(n)
0 0
1 1
2 6
3 24
4 48
5 156
6 192
7 580
8 836
9 1444
10 1660
11 4596
12 4980
13 13184
14 14768
15 17308
16 21756
17 55888
18 58768
19 146416
20 157552
21 181008
22 196304
23 481664
24 500096
25 765648
26 825152
27 1073920
28 1148288
29 2745728
30 2768768
31 6505728
32 7453952
33 8233792
34 8736960
35 9984832
36 10208064

List of values

[0, 1, 6, 24, 48, 156, 192, 580, 836, 1444, 1660, 4596, 4980, 13184, 14768, 17308, 21756, 55888, 58768, 146416, 157552, 181008, 196304, 481664, 500096, 765648, 825152, 1073920, 1148288, 2745728, 2768768, 6505728, 7453952, 8233792, 8736960, 9984832, 10208064]