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.

A287800 Numbers n such that phi(n) * tau(n) divides n^2, but neither tau(n) nor phi(n) divides n.

Table of values

n a(n)
1 900
2 2400
3 3840
4 6480
5 7200
6 11520
7 13056
8 39168
9 42240
10 79200
11 83232
12 96000
13 126720
14 145200
15 153600
16 157440
17 174240
18 195840
19 207360
20 288000
21 300000
22 317520
23 326592
24 387840
25 435600
26 460800
27 472320
28 480000
29 900000
30 971520
31 1056000
32 1161600
33 1163520
34 1228800
35 1440000

List of values

[900, 2400, 3840, 6480, 7200, 11520, 13056, 39168, 42240, 79200, 83232, 96000, 126720, 145200, 153600, 157440, 174240, 195840, 207360, 288000, 300000, 317520, 326592, 387840, 435600, 460800, 472320, 480000, 900000, 971520, 1056000, 1161600, 1163520, 1228800, 1440000]