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.

A069265 Numbers k such that Sum_{d|k} d/core(d) > k, where core(d) is the squarefree part of d.

Table of values

n a(n)
1 4
2 8
3 9
4 16
5 18
6 25
7 32
8 36
9 48
10 49
11 50
12 64
13 72
14 81
15 98
16 100
17 108
18 121
19 128
20 144
21 162
22 169
23 192
24 196
25 200
26 225
27 242
28 256
29 288
30 289
31 300
32 324
33 338
34 361
35 392
36 400
37 432
38 441
39 450
40 484
41 512
42 529
43 576
44 578
45 588
46 625
47 648
48 676
49 722
50 729
51 768
52 784
53 800
54 841
55 882
56 900

List of values

[4, 8, 9, 16, 18, 25, 32, 36, 48, 49, 50, 64, 72, 81, 98, 100, 108, 121, 128, 144, 162, 169, 192, 196, 200, 225, 242, 256, 288, 289, 300, 324, 338, 361, 392, 400, 432, 441, 450, 484, 512, 529, 576, 578, 588, 625, 648, 676, 722, 729, 768, 784, 800, 841, 882, 900]