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.

A138793 a(n) = concatenation of reversed digits of natural numbers from n down to 1.

Table of values

n a(n)
1 1
2 21
3 321
4 4321
5 54321
6 654321
7 7654321
8 87654321
9 987654321
10 1987654321
11 1101987654321
12 211101987654321
13 31211101987654321
14 4131211101987654321
15 514131211101987654321
16 61514131211101987654321
17 7161514131211101987654321

List of values

[1, 21, 321, 4321, 54321, 654321, 7654321, 87654321, 987654321, 1987654321, 1101987654321, 211101987654321, 31211101987654321, 4131211101987654321, 514131211101987654321, 61514131211101987654321, 7161514131211101987654321]

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

Content is available under The OEIS End-User License Agreement.