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.

A015793 Numbers n such that phi(n) + 4 divides sigma(n).

Table of values

n a(n)
1 6
2 15
3 21
4 24
5 30
6 33
7 39
8 42
9 51
10 57
11 66
12 69
13 78
14 84
15 87
16 93
17 96
18 102
19 108
20 111
21 114
22 120
23 123
24 129
25 138
26 141
27 159
28 174
29 175
30 177
31 183
32 186
33 201
34 213
35 219
36 220
37 222
38 237
39 246
40 249
41 258
42 267
43 282
44 291
45 303
46 309
47 318
48 321
49 327
50 339
51 350
52 354
53 366

List of values

[6, 15, 21, 24, 30, 33, 39, 42, 51, 57, 66, 69, 78, 84, 87, 93, 96, 102, 108, 111, 114, 120, 123, 129, 138, 141, 159, 174, 175, 177, 183, 186, 201, 213, 219, 220, 222, 237, 246, 249, 258, 267, 282, 291, 303, 309, 318, 321, 327, 339, 350, 354, 366]