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.

A069861 Numbers n that divide the concatenation of next n numbers.

Table of values

n a(n)
1 1
2 2
3 3
4 5
5 6
6 9
7 10
8 11
9 12
10 15
11 18
12 20
13 21
14 22
15 25
16 27
17 30
18 33
19 36
20 39
21 42
22 44
23 45
24 50
25 54
26 56
27 60
28 68
29 72
30 75
31 90
32 98
33 100
34 104
35 108
36 110
37 111
38 114
39 120
40 125
41 126
42 130
43 132
44 135
45 140
46 148
47 150
48 154
49 155
50 156
51 162
52 168
53 180
54 182
55 185
56 196
57 198
58 200
59 205
60 210
61 216

List of values

[1, 2, 3, 5, 6, 9, 10, 11, 12, 15, 18, 20, 21, 22, 25, 27, 30, 33, 36, 39, 42, 44, 45, 50, 54, 56, 60, 68, 72, 75, 90, 98, 100, 104, 108, 110, 111, 114, 120, 125, 126, 130, 132, 135, 140, 148, 150, 154, 155, 156, 162, 168, 180, 182, 185, 196, 198, 200, 205, 210, 216]