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.

A067081 Numbers k such that sigma(k+1) = 2*sigma(k).

Table of values

n a(n)
1 5
2 125
3 1253
4 1673
5 3127
6 5191
7 7615
8 12035
9 43817
10 47795
11 48559
12 49955
13 56975
14 58373
15 61721
16 63545
17 68033
18 78395
19 97411
20 106001
21 108473
22 109939
23 111451
24 111683
25 123497
26 123797
27 131659
28 137081
29 192065
30 192279
31 224561
32 228377
33 274273
34 280313
35 290417
36 290719
37 351815

List of values

[5, 125, 1253, 1673, 3127, 5191, 7615, 12035, 43817, 47795, 48559, 49955, 56975, 58373, 61721, 63545, 68033, 78395, 97411, 106001, 108473, 109939, 111451, 111683, 123497, 123797, 131659, 137081, 192065, 192279, 224561, 228377, 274273, 280313, 290417, 290719, 351815]