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.

A206448 Values of sigma(n) of composite numbers n such that sigma(n) = sigma(d) has solution for any other composite number d in increasing order.

Table of values

n a(n)
1 24
2 31
3 42
4 48
5 56
6 60
7 72
8 84
9 90
10 96
11 120
12 124
13 126
14 144
15 156
16 168
17 180
18 186
19 192
20 210
21 216
22 224
23 228
24 234
25 240
26 248
27 252
28 270
29 280
30 288
31 294
32 312
33 320
34 324
35 336
36 342
37 360
38 372
39 378
40 384
41 392
42 399
43 403
44 408
45 416
46 420
47 432
48 434
49 448
50 450
51 456
52 468
53 480
54 504

List of values

[24, 31, 42, 48, 56, 60, 72, 84, 90, 96, 120, 124, 126, 144, 156, 168, 180, 186, 192, 210, 216, 224, 228, 234, 240, 248, 252, 270, 280, 288, 294, 312, 320, 324, 336, 342, 360, 372, 378, 384, 392, 399, 403, 408, 416, 420, 432, 434, 448, 450, 456, 468, 480, 504]

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

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