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.

A078568 Repunits concatenated with A000422, where A000422 is the concatenation of numbers from n down to 1.

Table of values

n a(n)
1 11
2 1121
3 111321
4 11114321
5 1111154321
6 111111654321
7 11111117654321
8 1111111187654321
9 111111111987654321
10 111111111110987654321
11 111111111111110987654321
12 111111111111121110987654321

List of values

[11, 1121, 111321, 11114321, 1111154321, 111111654321, 11111117654321, 1111111187654321, 111111111987654321, 111111111110987654321, 111111111111110987654321, 111111111111121110987654321]

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

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