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.

A274766 Multiplication of pair of contiguous repunits, i.e., (0*1, 1*11, 11*111, 111*1111, 1111*11111, ...).

Table of values

n a(n)
0 0
1 11
2 1221
3 123321
4 12344321
5 1234554321
6 123456654321
7 12345677654321
8 1234567887654321
9 123456789987654321
10 12345679010987654321
11 1234567901220987654321
12 123456790123320987654321
13 12345679012344320987654321
14 1234567901234554320987654321

List of values

[0, 11, 1221, 123321, 12344321, 1234554321, 123456654321, 12345677654321, 1234567887654321, 123456789987654321, 12345679010987654321, 1234567901220987654321, 123456790123320987654321, 12345679012344320987654321, 1234567901234554320987654321]