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.

A306490 Numbers k such that sigma(k) - k - 2 is prime.

Table of values

n a(n)
1 8
2 9
3 15
4 16
5 18
6 27
7 32
8 33
9 35
10 36
11 45
12 50
13 51
14 64
15 65
16 75
17 77
18 87
19 91
20 95
21 98
22 119
23 123
24 125
25 135
26 143
27 144
28 147
29 153
30 161
31 162
32 175
33 177
34 185
35 195
36 200
37 207
38 209
39 213
40 215
41 217
42 221
43 231
44 247
45 259
46 261
47 273
48 285
49 287
50 297
51 303
52 315
53 321

List of values

[8, 9, 15, 16, 18, 27, 32, 33, 35, 36, 45, 50, 51, 64, 65, 75, 77, 87, 91, 95, 98, 119, 123, 125, 135, 143, 144, 147, 153, 161, 162, 175, 177, 185, 195, 200, 207, 209, 213, 215, 217, 221, 231, 247, 259, 261, 273, 285, 287, 297, 303, 315, 321]