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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.

A351238 Numbers M such that 87 * M = 1M1, where 1M1 denotes the concatenation of 1, M and 1.

Table of values

n a(n)
1 13
2 12987013
3 12987012987013
4 12987012987012987013
5 12987012987012987012987013
6 12987012987012987012987012987013
7 12987012987012987012987012987012987013
8 12987012987012987012987012987012987012987013
9 12987012987012987012987012987012987012987012987013
10 12987012987012987012987012987012987012987012987012987013

List of values

[13, 12987013, 12987012987013, 12987012987012987013, 12987012987012987012987013, 12987012987012987012987012987013, 12987012987012987012987012987012987013, 12987012987012987012987012987012987012987013, 12987012987012987012987012987012987012987012987013, 12987012987012987012987012987012987012987012987012987013]

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

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