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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.

A109002 Maximal difference between two n-digit numbers.

Table of values

n a(n)
1 9
2 89
3 899
4 8999
5 89999
6 899999
7 8999999
8 89999999
9 899999999
10 8999999999
11 89999999999
12 899999999999
13 8999999999999
14 89999999999999
15 899999999999999
16 8999999999999999
17 89999999999999999
18 899999999999999999
19 8999999999999999999
20 89999999999999999999
21 899999999999999999999

List of values

[9, 89, 899, 8999, 89999, 899999, 8999999, 89999999, 899999999, 8999999999, 89999999999, 899999999999, 8999999999999, 89999999999999, 899999999999999, 8999999999999999, 89999999999999999, 899999999999999999, 8999999999999999999, 89999999999999999999, 899999999999999999999]

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

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