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.

A335287 Balanced numbers (A020492) k with a record value of sigma(k)/phi(k).

Table of values

n a(n)
1 1
2 2
3 6
4 12
5 30
6 168
7 210
8 420
9 840
10 9240
11 83160
12 120120
13 5165160
14 26860680
15 277560360
16 569729160
17 16522145640
18 33044291280
19 563462139240
20 1140028049160
21 1255683068640
22 65361608151840
23 299761858075680
24 413956851628320

List of values

[1, 2, 6, 12, 30, 168, 210, 420, 840, 9240, 83160, 120120, 5165160, 26860680, 277560360, 569729160, 16522145640, 33044291280, 563462139240, 1140028049160, 1255683068640, 65361608151840, 299761858075680, 413956851628320]

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

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