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.

A327435 a(n) is the largest (2n+1)-digit palindrome that is the product of two numbers having an equal number of digits.

Table of values

n a(n)
0 9
1 999
2 99999
3 9999999
4 999969999
5 99999999999
6 9999998999999
7 999999999999999
8 99999999799999999
9 9999999997999999999
10 999999999999999999999
11 99999999999899999999999
12 9999999999999999999999999
13 999999999999979999999999999
14 99999999999999999999999999999
15 9999999999999996999999999999999

List of values

[9, 999, 99999, 9999999, 999969999, 99999999999, 9999998999999, 999999999999999, 99999999799999999, 9999999997999999999, 999999999999999999999, 99999999999899999999999, 9999999999999999999999999, 999999999999979999999999999, 99999999999999999999999999999, 9999999999999996999999999999999]

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

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