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.

A187267 Number of nonempty subsets of {1, 2, ..., n} with <=6 pairwise coprime elements.

Table of values

n a(n)
1 1
2 3
3 7
4 11
5 23
6 27
7 55
8 71
9 103
10 115
11 231
12 247
13 489
14 537
15 609
16 719
17 1383
18 1446
19 2674
20 2851
21 3204
22 3443
23 6110
24 6329
25 8484
26 9083
27 10930
28 11587
29 19252
30 19471
31 31084
32 34131
33 37428
34 39637
35 44583
36 45640
37 69968
38 73870
39 80421
40 82985

List of values

[1, 3, 7, 11, 23, 27, 55, 71, 103, 115, 231, 247, 489, 537, 609, 719, 1383, 1446, 2674, 2851, 3204, 3443, 6110, 6329, 8484, 9083, 10930, 11587, 19252, 19471, 31084, 34131, 37428, 39637, 44583, 45640, 69968, 73870, 80421, 82985]