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.

A067134 Numbers n such that sigma(n+1) = 2*sigma(n-1).

Table of values

n a(n)
1 119
2 1559
3 2939
4 17759
5 19919
6 32219
7 33839
8 55964
9 71039
10 186779
11 308039
12 511499
13 523775
14 553499
15 699359
16 838214
17 1048904
18 1159379
19 1328939
20 1333247
21 1700039
22 2462687
23 2703887
24 2956079
25 3115319
26 3561095
27 3764207
28 3972695
29 7625879
30 7852919
31 8048963

List of values

[119, 1559, 2939, 17759, 19919, 32219, 33839, 55964, 71039, 186779, 308039, 511499, 523775, 553499, 699359, 838214, 1048904, 1159379, 1328939, 1333247, 1700039, 2462687, 2703887, 2956079, 3115319, 3561095, 3764207, 3972695, 7625879, 7852919, 8048963]