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.

A057138 Add (n mod 10)*10^(n-1) to the previous term, with a(0) = 0.

Table of values

n a(n)
0 0
1 1
2 21
3 321
4 4321
5 54321
6 654321
7 7654321
8 87654321
9 987654321
10 987654321
11 10987654321
12 210987654321
13 3210987654321
14 43210987654321
15 543210987654321
16 6543210987654321
17 76543210987654321
18 876543210987654321

List of values

[0, 1, 21, 321, 4321, 54321, 654321, 7654321, 87654321, 987654321, 987654321, 10987654321, 210987654321, 3210987654321, 43210987654321, 543210987654321, 6543210987654321, 76543210987654321, 876543210987654321]

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

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