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.

A345309 Numbers whose digital sum coincides with digital sum of their largest proper divisor.

Table of values

n a(n)
1 18
2 27
3 36
4 54
5 72
6 81
7 90
8 108
9 126
10 135
11 144
12 162
13 180
14 198
15 216
16 234
17 243
18 252
19 270
20 297
21 306
22 324
23 342
24 351
25 360
26 361
27 378
28 396
29 405
30 414
31 432
32 450
33 504
34 513
35 522
36 540
37 551
38 558
39 567
40 576
41 594
42 612
43 621
44 630
45 702
46 703
47 720
48 738
49 756
50 774
51 792
52 810
53 837

List of values

[18, 27, 36, 54, 72, 81, 90, 108, 126, 135, 144, 162, 180, 198, 216, 234, 243, 252, 270, 297, 306, 324, 342, 351, 360, 361, 378, 396, 405, 414, 432, 450, 504, 513, 522, 540, 551, 558, 567, 576, 594, 612, 621, 630, 702, 703, 720, 738, 756, 774, 792, 810, 837]