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.

A085945 Number of subsets of {1,2,...,n} with relatively prime elements.

Table of values

n a(n)
1 1
2 2
3 5
4 11
5 26
6 53
7 116
8 236
9 488
10 983
11 2006
12 4016
13 8111
14 16238
15 32603
16 65243
17 130778
18 261566
19 523709
20 1047479
21 2095988
22 4192115
23 8386418
24 16772858
25 33550058
26 67100393
27 134209001
28 268418531
29 536853986
30 1073707991
31 2147449814
32 4294900694
33 8589866963

List of values

[1, 2, 5, 11, 26, 53, 116, 236, 488, 983, 2006, 4016, 8111, 16238, 32603, 65243, 130778, 261566, 523709, 1047479, 2095988, 4192115, 8386418, 16772858, 33550058, 67100393, 134209001, 268418531, 536853986, 1073707991, 2147449814, 4294900694, 8589866963]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.