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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.

A348316 a(n) is the largest Niven (or Harshad) number with exactly n digits and not containing the digit 0.

Table of values

n a(n)
1 9
2 84
3 999
4 9963
5 99972
6 999984
7 9999966
8 99999966
9 999999999
10 9999999828
11 99999999898
12 999999999853
13 9999999999936
14 99999999999783
15 999999999999984
16 9999999999999858
17 99999999999999939
18 999999999999999831
19 9999999999999999951
20 99999999999999999922
21 999999999999999999687

List of values

[9, 84, 999, 9963, 99972, 999984, 9999966, 99999966, 999999999, 9999999828, 99999999898, 999999999853, 9999999999936, 99999999999783, 999999999999984, 9999999999999858, 99999999999999939, 999999999999999831, 9999999999999999951, 99999999999999999922, 999999999999999999687]

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

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