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.

A116001 sigma(n) - phi(n) gives a semiprime (A001358).

Table of values

n a(n)
1 6
2 10
3 18
4 20
5 22
6 27
7 34
8 40
9 49
10 52
11 58
12 64
13 68
14 82
15 98
16 100
17 118
18 136
19 142
20 144
21 148
22 160
23 162
24 164
25 202
26 212
27 214
28 242
29 243
30 244
31 274
32 288
33 289
34 298
35 320
36 325
37 333
38 338
39 343
40 356
41 358
42 361
43 382
44 392
45 394
46 404
47 436
48 441
49 454
50 464
51 478
52 512
53 538
54 544
55 548

List of values

[6, 10, 18, 20, 22, 27, 34, 40, 49, 52, 58, 64, 68, 82, 98, 100, 118, 136, 142, 144, 148, 160, 162, 164, 202, 212, 214, 242, 243, 244, 274, 288, 289, 298, 320, 325, 333, 338, 343, 356, 358, 361, 382, 392, 394, 404, 436, 441, 454, 464, 478, 512, 538, 544, 548]