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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.

A332152 a(n) = 5*(10^(2*n+1)-1)/9 - 3*10^n.

Table of values

n a(n)
0 2
1 525
2 55255
3 5552555
4 555525555
5 55555255555
6 5555552555555
7 555555525555555
8 55555555255555555
9 5555555552555555555
10 555555555525555555555
11 55555555555255555555555
12 5555555555552555555555555
13 555555555555525555555555555
14 55555555555555255555555555555
15 5555555555555552555555555555555

List of values

[2, 525, 55255, 5552555, 555525555, 55555255555, 5555552555555, 555555525555555, 55555555255555555, 5555555552555555555, 555555555525555555555, 55555555555255555555555, 5555555555552555555555555, 555555555555525555555555555, 55555555555555255555555555555, 5555555555555552555555555555555]

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

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