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.

A332143 a(n) = 4*(10^(2*n+1)-1)/9 - 10^n.

Table of values

n a(n)
0 3
1 434
2 44344
3 4443444
4 444434444
5 44444344444
6 4444443444444
7 444444434444444
8 44444444344444444
9 4444444443444444444
10 444444444434444444444
11 44444444444344444444444
12 4444444444443444444444444
13 444444444444434444444444444
14 44444444444444344444444444444
15 4444444444444443444444444444444

List of values

[3, 434, 44344, 4443444, 444434444, 44444344444, 4444443444444, 444444434444444, 44444444344444444, 4444444443444444444, 444444444434444444444, 44444444444344444444444, 4444444444443444444444444, 444444444444434444444444444, 44444444444444344444444444444, 4444444444444443444444444444444]

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

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