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.

A243219 Smallest n-digit integer x such that x + A007954(x) has n+1 digits, where A007954(x) is the product of decimal digits of x.

Table of values

n a(n)
1 5
2 59
3 599
4 6799
5 68899
6 689999
7 6999999
8 77899999
9 779999999
10 7889999999
11 78999999999
12 799999999999
13 8689999999999
14 86999999999999
15 878999999999999
16 8799999999999999
17 88899999999999999
18 889999999999999999
19 8989999999999999999
20 89999999999999999999

List of values

[5, 59, 599, 6799, 68899, 689999, 6999999, 77899999, 779999999, 7889999999, 78999999999, 799999999999, 8689999999999, 86999999999999, 878999999999999, 8799999999999999, 88899999999999999, 889999999999999999, 8989999999999999999, 89999999999999999999]

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

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