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.

A272405 Numbers n such that sum of the divisors of n is not of the form x^2 + y^2 + z^2 where x, y, z are integers.

Table of values

n a(n)
1 4
2 8
3 12
4 16
5 18
6 24
7 25
8 32
9 38
10 48
11 59
12 64
13 75
14 91
15 96
16 99
17 114
18 125
19 128
20 130
21 135
22 158
23 166
24 169
25 177
26 192
27 196
28 203
29 205
30 209
31 221
32 239
33 242
34 251
35 256
36 268
37 273
38 283
39 290
40 315
41 324
42 347
43 358
44 365
45 367
46 375
47 378
48 379
49 384
50 387
51 390
52 392
53 403
54 422
55 423
56 427
57 443
58 445
59 460
60 474
61 476
62 493

List of values

[4, 8, 12, 16, 18, 24, 25, 32, 38, 48, 59, 64, 75, 91, 96, 99, 114, 125, 128, 130, 135, 158, 166, 169, 177, 192, 196, 203, 205, 209, 221, 239, 242, 251, 256, 268, 273, 283, 290, 315, 324, 347, 358, 365, 367, 375, 378, 379, 384, 387, 390, 392, 403, 422, 423, 427, 443, 445, 460, 474, 476, 493]