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.

A029465 Numbers k that divide the (right) concatenation of all numbers <= k written in base 20 (most significant digit on left).

Table of values

n a(n)
1 1
2 2
3 4
4 5
5 6
6 10
7 12
8 14
9 18
10 19
11 20
12 24
13 25
14 30
15 36
16 38
17 40
18 45
19 48
20 50
21 57
22 58
23 60
24 71
25 72
26 74
27 75
28 76
29 80
30 85
31 90
32 95
33 100
34 114
35 120
36 144
37 150
38 152
39 171
40 180
41 190
42 200
43 225
44 228
45 240
46 261
47 285
48 300
49 304
50 318
51 342
52 360
53 361
54 380
55 400
56 410
57 475
58 500
59 608
60 703

List of values

[1, 2, 4, 5, 6, 10, 12, 14, 18, 19, 20, 24, 25, 30, 36, 38, 40, 45, 48, 50, 57, 58, 60, 71, 72, 74, 75, 76, 80, 85, 90, 95, 100, 114, 120, 144, 150, 152, 171, 180, 190, 200, 225, 228, 240, 261, 285, 300, 304, 318, 342, 360, 361, 380, 400, 410, 475, 500, 608, 703]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.