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.
| n | a(n) |
|---|---|
| 1 | 9 |
| 2 | 81 |
| 3 | 961 |
| 4 | 9216 |
| 5 | 99856 |
| 6 | 978121 |
| 7 | 9998244 |
| 8 | 99321156 |
| 9 | 999887641 |
| 10 | 9978811236 |
| 11 | 99999515529 |
| 12 | 999332111556 |
| 13 | 9999995824729 |
| 14 | 99978881115136 |
| 15 | 999999961946176 |
| 16 | 9999333211115556 |
| 17 | 99999999356895225 |
| 18 | 999978918111112681 |
| 19 | 9999999986285964964 |
| 20 | 99999333321111155556 |