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 | 1 |
| 1 | 3 |
| 2 | 9 |
| 3 | 81 |
| 4 | 1296 |
| 5 | 30375 |
| 6 | 944784 |
| 7 | 36756909 |
| 8 | 1719926784 |
| 9 | 94143178827 |
| 10 | 5904900000000 |
| 11 | 417703359617577 |
| 12 | 32905425960566784 |
| 13 | 2857282535902251951 |
| 14 | 271165225379757133824 |
| 15 | 27925772039747314453125 |