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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.

A038395 Concatenation of the first n odd numbers in reverse order.

Table of values

n a(n)
1 1
2 31
3 531
4 7531
5 97531
6 1197531
7 131197531
8 15131197531
9 1715131197531
10 191715131197531
11 21191715131197531
12 2321191715131197531
13 252321191715131197531
14 27252321191715131197531
15 2927252321191715131197531
16 312927252321191715131197531

List of values

[1, 31, 531, 7531, 97531, 1197531, 131197531, 15131197531, 1715131197531, 191715131197531, 21191715131197531, 2321191715131197531, 252321191715131197531, 27252321191715131197531, 2927252321191715131197531, 312927252321191715131197531]

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

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