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.

A231155 Largest k such that no sum of digits is divisible by n (zeros not allowed in the digits of k).

Table of values

n a(n)
2 9
3 88
4 999
5 9999
6 77777
7 999999
8 9999999
9 88888888
10 999999999
11 9999999999
12 77777777777
13 999999999999
14 9999999999999
15 88888888888888
16 999999999999999
17 9999999999999999
18 77777777777777777
19 999999999999999999
20 9999999999999999999

List of values

[9, 88, 999, 9999, 77777, 999999, 9999999, 88888888, 999999999, 9999999999, 77777777777, 999999999999, 9999999999999, 88888888888888, 999999999999999, 9999999999999999, 77777777777777777, 999999999999999999, 9999999999999999999]

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

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