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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.

A275196 Odd numbers n such that sigma(n) does not divide sigma(n^3).

Table of values

n a(n)
1 9
2 25
3 27
4 49
5 63
6 75
7 81
8 99
9 117
10 121
11 125
12 135
13 147
14 153
15 169
16 171
17 175
18 207
19 225
20 243
21 245
22 261
23 275
24 289
25 297
26 325
27 333
28 343
29 361
30 363
31 369
32 375
33 387
34 405
35 425
36 441
37 475
38 477
39 507
40 513
41 525
42 529
43 531
44 539
45 549
46 567
47 575
48 603
49 605
50 625
51 637
52 639
53 675
54 693
55 711
56 725
57 729

List of values

[9, 25, 27, 49, 63, 75, 81, 99, 117, 121, 125, 135, 147, 153, 169, 171, 175, 207, 225, 243, 245, 261, 275, 289, 297, 325, 333, 343, 361, 363, 369, 375, 387, 405, 425, 441, 475, 477, 507, 513, 525, 529, 531, 539, 549, 567, 575, 603, 605, 625, 637, 639, 675, 693, 711, 725, 729]

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

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