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 | 19683 |
| 4 | 1679616 |
| 5 | 205962976 |
| 6 | 68719476736 |
| 7 | 6722988818432 |
| 8 | 248155780267521 |
| 9 | 150094635296999121 |
| 10 | 480682838924478847449 |
| 11 | 23316389970546096340992 |
| 12 | 2518170116818978404827136 |
| 13 | 13695791164569918553628942336 |
| 14 | 4219782742781494680756610809856 |