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.

A116030 sigma(n) - phi(n) is a palindrome greater than 2.

Table of values

n a(n)
1 4
2 8
3 9
4 18
5 25
6 27
7 28
8 57
9 62
10 72
11 85
12 123
13 128
14 176
15 184
16 189
17 192
18 218
19 220
20 234
21 243
22 246
23 252
24 256
25 258
26 259
27 261
28 278
29 282
30 306
31 309
32 316
33 322
34 332
35 338
36 339
37 356
38 375
39 380
40 388
41 399
42 403
43 490
44 495
45 505
46 512
47 518
48 544
49 590
50 597
51 622
52 632
53 655
54 662

List of values

[4, 8, 9, 18, 25, 27, 28, 57, 62, 72, 85, 123, 128, 176, 184, 189, 192, 218, 220, 234, 243, 246, 252, 256, 258, 259, 261, 278, 282, 306, 309, 316, 322, 332, 338, 339, 356, 375, 380, 388, 399, 403, 490, 495, 505, 512, 518, 544, 590, 597, 622, 632, 655, 662]