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 | 1 |
| 2 | 2 |
| 3 | 9 |
| 4 | 64 |
| 5 | 625 |
| 6 | 7056 |
| 7 | 89929 |
| 8 | 1284032 |
| 9 | 20351601 |
| 10 | 354648160 |
| 11 | 6736612201 |
| 12 | 138472331328 |
| 13 | 3061103815081 |
| 14 | 72391319923664 |
| 15 | 1823032999274985 |
| 16 | 48692068509655936 |
| 17 | 1374488205290880481 |
| 18 | 40877130077266074048 |