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.

A078248 Smallest multiple of n using only digits 0 and 9.

Table of values

n a(n)
1 9
2 90
3 9
4 900
5 90
6 90
7 9009
8 9000
9 9
10 90
11 99
12 900
13 9009
14 90090
15 90
16 90000
17 99909
18 90
19 99009
20 900
21 9009
22 990
23 990909
24 9000
25 900
26 90090
27 999
28 900900
29 9909909
30 90
31 999099
32 900000
33 99
34 999090
35 90090
36 900
37 999
38 990090
39 9009
40 9000
41 99999
42 90090
43 9909909

List of values

[9, 90, 9, 900, 90, 90, 9009, 9000, 9, 90, 99, 900, 9009, 90090, 90, 90000, 99909, 90, 99009, 900, 9009, 990, 990909, 9000, 900, 90090, 999, 900900, 9909909, 90, 999099, 900000, 99, 999090, 90090, 900, 999, 990090, 9009, 9000, 99999, 90090, 9909909]