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.

A216376 Semiprimes of the form n*10^n + 1.

Table of values

n a(n)
1 201
2 500001
3 130000000000001
4 280000000000000000000000000001
5 340000000000000000000000000000000001
6 36000000000000000000000000000000000001
7 39000000000000000000000000000000000000001

List of values

[201, 500001, 130000000000001, 280000000000000000000000000001, 340000000000000000000000000000000001, 36000000000000000000000000000000000001, 39000000000000000000000000000000000000001]

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

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