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.

A108896 Numbers whose outer two digits are 9's and inner digits are 4's.

Table of values

n a(n)
1 949
2 9449
3 94449
4 944449
5 9444449
6 94444449
7 944444449
8 9444444449
9 94444444449
10 944444444449
11 9444444444449
12 94444444444449
13 944444444444449
14 9444444444444449
15 94444444444444449
16 944444444444444449
17 9444444444444444449
18 94444444444444444449

List of values

[949, 9449, 94449, 944449, 9444449, 94444449, 944444449, 9444444449, 94444444449, 944444444449, 9444444444449, 94444444444449, 944444444444449, 9444444444444449, 94444444444444449, 944444444444444449, 9444444444444444449, 94444444444444444449]

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

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