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.

A309780 Even numbers m having the property that for every odd prime divisor p of m there exists a positive integer k < p-1, such that p-k|m-k.

Table of values

n a(n)
1 20
2 28
3 44
4 50
5 52
6 68
7 76
8 80
9 88
10 92
11 104
12 110
13 112
14 116
15 124
16 136
17 148
18 152
19 164
20 170
21 172
22 176
23 184
24 188
25 196
26 200
27 208
28 212
29 230
30 232
31 236
32 238
33 242
34 244
35 248
36 268
37 272
38 284
39 286
40 290
41 292
42 296
43 304
44 316
45 320
46 322
47 328
48 332
49 338
50 344
51 356
52 364
53 368
54 374

List of values

[20, 28, 44, 50, 52, 68, 76, 80, 88, 92, 104, 110, 112, 116, 124, 136, 148, 152, 164, 170, 172, 176, 184, 188, 196, 200, 208, 212, 230, 232, 236, 238, 242, 244, 248, 268, 272, 284, 286, 290, 292, 296, 304, 316, 320, 322, 328, 332, 338, 344, 356, 364, 368, 374]

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

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