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.

A241481 Numbers such that the GCD of the x's that satisfy sigma(x) = sigma(n) is not equal to 1 while the number of such x's is not 1 either.

Table of values

n a(n)
1 48
2 68
3 75
4 80
5 82
6 104
7 116
8 122
9 144
10 156
11 160
12 189
13 196
14 212
15 225
16 237
17 242
18 273
19 279
20 291
21 309
22 328
23 342
24 356
25 364
26 403
27 490
28 513
29 524
30 531
31 592
32 597
33 614
34 640
35 651
36 679
37 684
38 688
39 712
40 784
41 788
42 804
43 808
44 810
45 822
46 833
47 889
48 898
49 903
50 922
51 925
52 927
53 954

List of values

[48, 68, 75, 80, 82, 104, 116, 122, 144, 156, 160, 189, 196, 212, 225, 237, 242, 273, 279, 291, 309, 328, 342, 356, 364, 403, 490, 513, 524, 531, 592, 597, 614, 640, 651, 679, 684, 688, 712, 784, 788, 804, 808, 810, 822, 833, 889, 898, 903, 922, 925, 927, 954]

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

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