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.

A382504 Numbers k such that one or both of sigma(k) + k and sigma(k) - k is a perfect number.

Table of values

n a(n)
1 6
2 10
3 25
4 28
5 496
6 652
7 8128
8 10682
9 10828
10 33550336
11 44655764
12 8589869056
13 8623554304

List of values

[6, 10, 25, 28, 496, 652, 8128, 10682, 10828, 33550336, 44655764, 8589869056, 8623554304]