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.

A258775 Numbers n such that 1 + sigma(n)+ sigma(n)^2 is prime.

Table of values

n a(n)
1 1
2 2
3 5
4 6
5 7
6 8
7 11
8 13
9 14
10 15
11 19
12 23
13 34
14 37
15 40
16 45
17 49
18 53
19 57
20 58
21 60
22 61
23 78
24 79
25 89
26 92
27 105
28 106
29 109
30 123
31 129
32 132
33 137
34 138
35 140
36 141
37 143
38 148
39 149
40 154
41 155
42 156
43 160
44 161
45 163
46 165
47 167
48 182
49 188
50 191
51 193
52 195
53 201
54 208
55 212
56 213
57 222
58 226

List of values

[1, 2, 5, 6, 7, 8, 11, 13, 14, 15, 19, 23, 34, 37, 40, 45, 49, 53, 57, 58, 60, 61, 78, 79, 89, 92, 105, 106, 109, 123, 129, 132, 137, 138, 140, 141, 143, 148, 149, 154, 155, 156, 160, 161, 163, 165, 167, 182, 188, 191, 193, 195, 201, 208, 212, 213, 222, 226]