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.

A134621 Numbers such that the arithmetic mean of the 4th power of their prime factors (taken with multiplicity) is a prime.

Table of values

n a(n)
1 15
2 28
3 39
4 48
5 51
6 65
7 68
8 76
9 77
10 85
11 87
12 93
13 111
14 119
15 133
16 141
17 143
18 148
19 155
20 161
21 175
22 187
23 189
24 209
25 212
26 215
27 221
28 225
29 235
30 244
31 275
32 287
33 295
34 301
35 315
36 316
37 320
38 323
39 329
40 355
41 393
42 403
43 404
44 411
45 428
46 437
47 447
48 451
49 455
50 481
51 505
52 508
53 515
54 517

List of values

[15, 28, 39, 48, 51, 65, 68, 76, 77, 85, 87, 93, 111, 119, 133, 141, 143, 148, 155, 161, 175, 187, 189, 209, 212, 215, 221, 225, 235, 244, 275, 287, 295, 301, 315, 316, 320, 323, 329, 355, 393, 403, 404, 411, 428, 437, 447, 451, 455, 481, 505, 508, 515, 517]

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

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