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) |
|---|---|
| 0 | 0 |
| 1 | 9 |
| 2 | 162 |
| 3 | 2187 |
| 4 | 26244 |
| 5 | 295245 |
| 6 | 3188646 |
| 7 | 33480783 |
| 8 | 344373768 |
| 9 | 3486784401 |
| 10 | 34867844010 |
| 11 | 345191655699 |
| 12 | 3389154437772 |
| 13 | 33044255768277 |
| 14 | 320275094369454 |
| 15 | 3088366981419735 |
| 16 | 29648323021629456 |
| 17 | 283512088894331673 |
| 18 | 2701703435345984178 |
| 19 | 25666182635786849691 |
| 20 | 243153309181138576020 |